G01B1/00	7	Measuring instruments characterised by the selection of material therefor	G01B1/00	G01B1/00		524
G01B3/00	7	Measuring instruments characterised by the use of mechanical techniques<br><br><u>NOTE</u><br><br>When classifying in this group, mechanical arrangements for measuring specific parameters can be further classified in group G01B5/00.	G01B3/00	G01B3/00		498
G01B3/002	8	{Details}	G01B3/00	G01B3/00		470
G01B3/004	9	{Scales; Graduations}	G01B3/00	G01B3/00		1008
G01B3/006	10	{having both coarse and fine graduation}	G01B3/00	G01B3/00		164
G01B3/008	9	{Arrangements for controlling the measuring force}	G01B3/00	G01B3/00		462
G01B3/02	8	Rulers with scales or marks for direct reading (measuring tapes G01B3/10)	G01B3/02	G01B3/02		1323
G01B3/04	9	rigid	G01B3/04	G01B3/04		1545
G01B3/06	10	folding	G01B3/06	G01B3/06		833
G01B3/08	10	extensible	G01B3/08	G01B3/08		646
G01B3/10	8	Measuring tapes	G01B3/10	G01B3/10		567
G01B3/1003	9	characterised by structure or material; characterised by layout or indicia	G01B3/1003	G01B3/1003		850
G01B3/1004	10	{Measuring tapes without casings}	G01B3/1003	G01B3/10		134
G01B3/1005	9	Means for controlling winding or unwinding of tapes	G01B3/1005	G01B3/1005		845
G01B3/1007	10	Means for locking	G01B3/1007	G01B3/1007		111
G01B2003/101	11	{acting on the drum}	G01B3/1007	G01B3/10		98
G01B2003/1012	11	{engaging the tape in a direction parallel to the tape itself}	G01B3/1007	G01B3/10		61
G01B2003/1015	11	{engaging the tape in a direction transversal to the tape itself}	G01B3/1007	G01B3/10		201
G01B2003/1017	11	{acting on the whole coil}	G01B3/1007	G01B3/10		54
G01B3/102	10	Means for damping	G01B3/102	G01B3/102		93
G01B2003/1023	10	{Winding mechanisms}	G01B3/1005	G01B3/102		89
G01B2003/1025	11	{operated manually, e.g. crank-handles}	G01B3/1005	G01B3/102		260
G01B2003/1028	11	{operated by electric motors}	G01B3/1005	G01B3/102		72
G01B2003/103	11	{operated by springs}	G01B3/1005	G01B3/10		179
G01B2003/1033	10	{Means for activating the locking, braking or releasing of the tape, e.g. buttons}	G01B3/1005	G01B3/10		55
G01B2003/1035	11	{by pivotal operation}	G01B3/1005	G01B3/10		108
G01B2003/1038	11	{by translatory motion operation}	G01B3/1005	G01B3/10		143
G01B3/1041	9	characterised by casings	G01B3/1041	G01B3/1041		818
G01B3/1043	10	Details of internal structure thereof, e.g. means for coupling separately moulded casing halves	G01B3/1043	G01B3/1043		426
G01B3/1046	10	Details of external structure thereof, e.g. shapes for ensuring firmer hold	G01B3/1046	G01B3/1046		505
G01B3/1048	11	Integrated means for affixing or holding	G01B3/1048	G01B3/1048		283
G01B2003/1051	10	{specially adapted for two or more tapes within the same casing}	G01B3/1041	G01B3/10		80
G01B2003/1053	10	{Tape exit slots, e.g. shape or exit direction}	G01B3/1041	G01B3/10		212
G01B3/1056	9	Tape end arrangements, e.g. end-hooks	G01B3/1056	G01B3/1056		678
G01B2003/1058	9	{Manufacturing or assembling methods}	G01B3/10	G01B3/10		189
G01B3/1061	9	Means for displaying or assisting reading of length measurement	G01B3/1061	G01B3/1061		345
G01B2003/1064	10	{Windows, e.g. lenses, glasses or cross-hairs}	G01B3/1061	G01B3/10		162
G01B2003/1066	10	{Index sliding on tape}	G01B3/1061	G01B3/10		65
G01B3/1069	10	Electronic or mechanical display arrangements	G01B3/1069	G01B3/1069		298
G01B3/1071	9	Separate means for supporting or affixing measuring tapes	G01B3/1071	G01B3/1071		441
G01B2003/1074	10	{associated with the casings}	G01B3/1071	G01B3/10		233
G01B2003/1076	10	{associated with the end-hooks}	G01B3/1071	G01B3/10		229
G01B2003/1079	10	{associated with the tapes}	G01B3/1071	G01B3/10		137
G01B3/1084	9	Tapes combined with arrangements for functions other than measuring lengths	G01B3/1084	G01B3/1084		995
G01B2003/1087	10	{for illuminating}	G01B3/1084	G01B3/10		103
G01B3/1089	10	for marking, drawing or cutting	G01B3/1089	G01B3/1089		456
G01B3/1092	10	for performing length measurements and at least one other measurement of a different nature, e.g. bubble-type level	G01B3/1092	G01B3/1092		392
G01B3/1094	10	for recording information or for performing calculations	G01B3/1094	G01B3/1094		269
G01B2003/1097	10	{Tape measures with an adhesive surface}	G01B3/1084	G01B3/10		73
G01B3/11	8	Chains for measuring length	G01B3/11	G01B3/11		242
G01B3/12	8	Measuring wheels	G01B3/12	G01B3/12		761
G01B3/14	8	Templates for checking contours {(templates for mounting doors or windows E04F21/0007)}	G01B3/14	G01B3/14		424
G01B3/16	8	Compasses, i.e. with a pair of pivoted arms	G01B3/16	G01B3/16		277
G01B3/163	9	{without measuring scale}	G01B3/16	G01B3/16		16
G01B3/166	9	{provided with a measuring scale}	G01B3/16	G01B3/16		396
G01B3/18	8	Micrometers	G01B3/18	G01B3/18		1664
G01B3/20	8	Slide gauges	G01B3/20	G01B3/20		1739
G01B3/205	9	{provided with a counter for digital indication of the measured dimension}	G01B3/20	G01B3/20		454
G01B3/22	8	Feeler-pin gauges, e.g. dial gauges (for measuring contours or curvatures G01B5/20)	G01B3/22	G01B3/22		1514
G01B3/24	9	with open yoke, i.e. calipers	G01B3/24	G01B3/24		403
G01B3/26	9	Plug gauges	G01B3/26	G01B3/26		236
G01B3/28	9	Depth gauges	G01B3/28	G01B3/28		450
G01B3/30	8	Bars, blocks, or strips in which the distance between a pair of faces is fixed, although it may be preadjustable, e.g. end measure, feeler strip	G01B3/30	G01B3/30		714
G01B3/303	9	{pre-adjustable, e.g. by means of micrometerscrew}	G01B3/30	G01B3/30		110
G01B3/306	10	{with inclined slide plane}	G01B3/30	G01B3/30		85
G01B3/32	9	Holders therefor	G01B3/32	G01B3/32		98
G01B3/34	8	Ring or other apertured gauges, e.g. "go/no-go" gauge	G01B3/34	G01B3/34		445
G01B3/36	9	for external screw-threads	G01B3/36	G01B3/36		100
G01B3/38	8	Gauges with an open yoke and opposed faces, i.e. calipers, in which the internal distance between the faces is fixed, although it may be preadjustable	G01B3/38	G01B3/38		438
G01B3/40	9	for external screw-threads	G01B3/40	G01B3/40		448
G01B3/42	9	of limit-gauge type, i.e. "go/no-go" (G01B3/40 takes precedence)	G01B3/42	G01B3/42		81
G01B3/44	10	preadjustable for wear or tolerance	G01B3/44	G01B3/44		199
G01B3/46	8	Plug gauges for internal dimensions with engaging surfaces which are at a fixed distance, although they may be preadjustable	G01B3/46	G01B3/46		397
G01B3/48	9	for internal screw-threads	G01B3/48	G01B3/48		407
G01B3/50	9	of limit-gauge type, i.e. "go/no-go" (G01B3/48 takes precedence)	G01B3/50	G01B3/50		147
G01B3/52	10	preadjustable for wear or tolerance	G01B3/52	G01B3/52		22
G01B3/56	8	Gauges for measuring angles or tapers, e.g. conical calipers	G01B3/56	G01B3/56		1838
G01B3/563	9	{Protractors (for use in geodesy G01C1/00; protractor heads for drawing machines B43L13/08)}	G01B3/56	G01B3/56		748
G01B3/566	9	{Squares}	G01B3/56	G01B3/56		644
G01B5/00	7	Measuring arrangements characterised by the use of mechanical techniques<br><br><u>NOTE</u><br><br>When classifying in this group, specific mechanical measuring instruments can be further classified in group G01B3/00.	G01B5/00	G01B5/00		4243
G01B5/0002	8	{Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured}	G01B5/00	G01B5/00		4960
G01B5/0004	9	{Supports (G01B5/025 takes precedence)}	G01B5/00	G01B5/00		4057
G01B5/0007	9	{Surface plates}	G01B5/00	G01B5/00		139
G01B5/0009	9	{Guiding surfaces; Arrangements compensating for non-linearity there-of}	G01B5/00	G01B5/00		292
G01B5/0011	8	{Arrangements for eliminating or compensation of measuring errors due to temperature or weight}	G01B5/00	G01B5/00		118
G01B5/0014	9	{due to temperature (on machine tools B23Q11/0003)}	G01B5/00	G01B5/00		524
G01B5/0016	9	{due to weight (on machine tools B23Q11/001)}	G01B5/00	G01B5/00		188
G01B5/0018	8	{for measuring key-ways}	G01B5/00	G01B5/00		102
G01B5/0021	8	{for measuring the volumetric dimension of an object}	G01B5/00	G01B5/00		170
G01B5/0023	8	{Measuring of sport goods, e.g. bowling accessories, golfclubs, game balls}	G01B5/00	G01B5/00		297
G01B5/0025	8	{Measuring of vehicle parts (G01B5/003 takes precedence)}	G01B5/00	G01B5/00		3090
G01B5/0028	9	{Brakes, brakeshoes, clutches}	G01B5/00	G01B5/00		227
G01B5/003	8	{Measuring of motor parts}	G01B5/00	G01B5/00		959
G01B5/0032	9	{Valves, actuating devices for valves}	G01B5/00	G01B5/00		108
G01B5/0035	8	{Measuring of dimensions of trees}	G01B5/00	G01B5/00		447
G01B5/0037	8	{Measuring of dimensions of welds}	G01B5/00	G01B5/00		183
G01B5/004	8	for measuring coordinates of points	G01B5/004	G01B5/004		623
G01B5/008	9	using coordinate measuring machines	G01B5/008	G01B5/008		1484
G01B5/012	10	Contact-making feeler heads therefor	G01B5/012	G01B5/012		958
G01B5/016	11	Constructional details of contacts	G01B5/016	G01B5/016		130
G01B5/02	8	for measuring length, width or thickness (G01B5/004, G01B5/08 take precedence)	G01B5/02	G01B5/02		5132
G01B5/025	9	{Measuring of circumference; Measuring length of ring-shaped articles (G01B5/0035 takes precedence)}	G01B5/02	G01B5/02		352
G01B5/04	9	specially adapted for measuring length or width of objects while moving	G01B5/04	G01B5/04		107
G01B5/043	10	{for measuring length}	G01B5/04	G01B5/04		1270
G01B5/046	10	{for measuring width}	G01B5/04	G01B5/04		116
G01B5/06	9	for measuring thickness	G01B5/06	G01B5/06		1994
G01B5/061	10	{height gauges}	G01B5/06	G01B5/06		1712
G01B5/063	11	{provided with a slide which may be moved along a vertical support by means of a micrometer screw}	G01B5/06	G01B5/06		110
G01B5/065	11	{provided with a slide which may be fixed along its vertical support in discrete calibrated position}	G01B5/06	G01B5/06		50
G01B5/066	10	{of coating}	G01B5/06	G01B5/06		313
G01B5/068	10	{of objects while moving (G01B5/066 takes precedence)}	G01B5/06	G01B5/06		433
G01B5/08	8	for measuring diameters {(G01B5/0035 takes precedence; measuring radius of curvature G01B5/213)}	G01B5/08	G01B5/08		3093
G01B5/10	9	of objects while moving	G01B5/10	G01B5/10		226
G01B5/12	9	internal diameters	G01B5/12	G01B5/12		2194
G01B5/14	8	for measuring distance or clearance between spaced objects or spaced apertures (G01B5/24 takes precedence)	G01B5/14	G01B5/14		3014
G01B5/143	9	{between holes on a workpiece}	G01B5/14	G01B5/14		325
G01B5/146	9	{measuring play on bearings}	G01B5/14	G01B5/14		288
G01B5/16	9	between a succession of regularly spaced objects or regularly spaced apertures	G01B5/16	G01B5/16		250
G01B5/163	10	{of screw-threads}	G01B5/16	G01B5/16		200
G01B5/166	10	{of gear teeth}	G01B5/16	G01B5/16		128
G01B5/18	8	for measuring depth	G01B5/18	G01B5/18		1581
G01B5/20	8	for measuring contours or curvatures	G01B5/20	G01B5/20		2975
G01B5/201	9	{for measuring roundness}	G01B5/20	G01B5/20		779
G01B5/202	9	{of gears}	G01B5/20	G01B5/20		256
G01B5/204	9	{of screw-threads}	G01B5/20	G01B5/20		292
G01B5/205	9	{of turbine blades or propellers}	G01B5/20	G01B5/20		263
G01B5/207	9	using a plurality of fixed, simultaneously operating transducers (G01B5/213&#160;-&#160;G01B5/22 take precedence)	G01B5/207	G01B5/207		555
G01B5/213	9	for measuring radius of curvature	G01B5/213	G01B5/213		391
G01B5/22	9	Spherometers	G01B5/22	G01B5/22		67
G01B5/24	8	for measuring angles or tapers; for testing the alignment of axes	G01B5/24	G01B5/24		3035
G01B5/241	9	{for measuring conicity}	G01B5/24	G01B5/24		239
G01B5/242	9	{Sine bars; Sine plates}	G01B5/24	G01B5/24		132
G01B5/243	9	{for measuring chamfer (seeG01B3/56)}	G01B5/24	G01B5/24		68
G01B5/245	9	for testing perpendicularity	G01B5/245	G01B5/245		818
G01B5/25	9	for testing the alignment of axes	G01B5/25	G01B5/25		1048
G01B5/252	10	for measuring eccentricity, i.e. lateral shift between two parallel axes	G01B5/252	G01B5/252		1382
G01B5/255	9	for testing wheel alignment	G01B5/255	G01B5/255		1039
G01B5/26	8	for measuring areas, e.g. planimeters	G01B5/26	G01B5/26		633
G01B5/28	8	for measuring roughness or irregularity of surfaces	G01B5/28	G01B5/28		2350
G01B5/285	9	{for controlling eveness}	G01B5/28	G01B5/28		352
G01B5/30	8	for measuring the deformation in a solid, e.g. mechanical strain gauge	G01B5/30	G01B5/30		2865
G01B7/00	7	Measuring arrangements characterised by the use of electric or magnetic techniques	G01B7/00	G01B7/00		1517
G01B7/001	8	{Constructional details of gauge heads (G01B7/012 takes precedence)}	G01B7/00	G01B7/00		456
G01B7/002	8	{Constructional details of contacts for gauges actuating one or more contacts (G01B7/016 takes precedence)}	G01B7/00	G01B7/00		288
G01B7/003	8	{for measuring position, not involving coordinate determination (coordinate measuring G01B7/004)}	G01B7/00	G01B7/00		3403
G01B7/004	8	for measuring coordinates of points	G01B7/004	G01B7/004		918
G01B7/008	9	using coordinate measuring machines	G01B7/008	G01B7/008		300
G01B7/012	10	Contact-making feeler heads therefor	G01B7/012	G01B7/012		559
G01B7/016	11	Constructional details of contacts	G01B7/016	G01B7/016		71
G01B7/02	8	for measuring length, width or thickness (G01B7/004, G01B7/12 take precedence)	G01B7/02	G01B7/02		4168
G01B7/023	9	{for measuring distance between sensor and object (G01B7/082 and G01B7/102 take precedence)}	G01B7/02	G01B7/02		1264
G01B7/026	9	{for measuring length of cable, band or the like, which has been paid out, e.g. from a reel (measuring length of objects while moving G01B7/04)}	G01B7/02	G01B7/02		236
G01B7/04	9	specially adapted for measuring length or width of objects while moving	G01B7/04	G01B7/04		153
G01B7/042	10	{for measuring length}	G01B7/04	G01B7/04		294
G01B7/044	11	{using capacitive means}	G01B7/04	G01B7/04		73
G01B7/046	11	{using magnetic means}	G01B7/04	G01B7/04		232
G01B7/048	10	{for measuring width}	G01B7/04	G01B7/04		90
G01B7/06	9	for measuring thickness {(measuring during the manufacture of coatings C23C14/54)}	G01B7/06	G01B7/06		1749
G01B7/063	10	{using piezoelectric resonators}	G01B7/06	G01B7/06		36
G01B7/066	11	{for measuring thickness of coating (apparatus or processes for the manufacture of piezoelectric or electrostrictive resonators for obtaining desired frequency H03H3/04)}	G01B7/06	G01B7/06		123
G01B7/08	10	{using capacitive means}	G01B7/06	G01B7/08		284
G01B7/082	11	{Height gauges}	G01B7/06	G01B7/08		90
G01B7/085	11	{for measuring thickness of coating}	G01B7/06	G01B7/08		212
G01B7/087	11	{for measuring of objects while moving (G01B7/085 takes precedence)}	G01B7/06	G01B7/08		182
G01B7/10	10	{using magnetic means, e.g. by measuring change of reluctance}	G01B7/06	G01B7/10		690
G01B7/102	11	{Height gauges}	G01B7/06	G01B7/10		114
G01B7/105	11	{for measuring thickness of coating}	G01B7/06	G01B7/10		791
G01B7/107	11	{for measuring objects while moving (G01B7/105 takes precedence)}	G01B7/06	G01B7/10		324
G01B7/12	8	for measuring diameters	G01B7/12	G01B7/12		671
G01B7/125	9	{of objects while moving}	G01B7/12	G01B7/12		239
G01B7/13	9	Internal diameters	G01B7/13	G01B7/13		408
G01B7/14	8	for measuring distance or clearance between spaced objects or spaced apertures (G01B7/30 takes precedence)	G01B7/14	G01B7/14		2346
G01B7/142	9	{between holes on a workpiece}	G01B7/14	G01B7/14		42
G01B7/144	9	{Measuring play on bearings}	G01B7/14	G01B7/14		163
G01B7/146	9	{Measuring on gear teeth}	G01B7/14	G01B7/14		36
G01B7/148	9	{Measuring on screw threads}	G01B7/14	G01B7/14		29
G01B7/15	9	being regularly spaced	G01B7/15	G01B7/15		92
G01B7/16	8	for measuring the deformation in a solid, e.g. by resistance strain gauge	G01B7/16	G01B7/16		3373
G01B7/18	9	{using change in resistance}	G01B7/16	G01B7/18		2897
G01B7/20	10	{formed by printed-circuit technique}	G01B7/16	G01B7/20		232
G01B7/22	9	{using change in capacitance}	G01B7/16	G01B7/22		474
G01B7/24	9	using change in magnetic properties	G01B7/24	G01B7/24		755
G01B7/26	8	for measuring depth	G01B7/26	G01B7/26		587
G01B7/28	8	for measuring contours or curvatures	G01B7/28	G01B7/28		1065
G01B7/281	9	{for measuring contour or curvature along an axis, e.g. axial curvature of a pipeline or along a series of feeder rollers}	G01B7/28	G01B7/28		170
G01B7/282	9	{for measuring roundness}	G01B7/28	G01B7/28		305
G01B7/283	9	{of gears}	G01B7/28	G01B7/28		109
G01B7/284	9	{of screw-threads}	G01B7/28	G01B7/28		47
G01B7/285	9	{of propellers or turbine blades}	G01B7/28	G01B7/28		53
G01B7/286	9	{Spherometers}	G01B7/28	G01B7/28		12
G01B7/287	9	using a plurality of fixed, simultaneously operating transducers (G01B7/293 takes precedence)	G01B7/287	G01B7/287		370
G01B7/293	9	for measuring radius of curvature	G01B7/293	G01B7/293		93
G01B7/30	8	for measuring angles or tapers; for testing the alignment of axes	G01B7/30	G01B7/30		4518
G01B7/305	9	for testing perpendicularity	G01B7/305	G01B7/305		94
G01B7/31	9	for testing the alignment of axes	G01B7/31	G01B7/31		423
G01B7/312	10	for measuring eccentricity, i.e. lateral shift between two parallel axes	G01B7/312	G01B7/312		367
G01B7/315	9	for testing wheel alignment	G01B7/315	G01B7/315		231
G01B7/32	8	for measuring areas	G01B7/32	G01B7/32		271
G01B7/34	8	for measuring roughness or irregularity of surfaces	G01B7/34	G01B7/34		1046
G01B7/345	9	{for measuring evenness}	G01B7/34	G01B7/34		338
G01B9/00	7	Measuring instruments characterised by the use of optical techniques<br><br><u>NOTE</u><br><br>When classifying in this group, optical arrangements for measuring specific parameters can be further classified in group G01B11/00.	G01B9/00	G01B9/00		234
G01B9/02	8	Interferometers	G01B9/02	G01B9/02		1427
G01B9/02001	9	characterised by controlling or generating intrinsic radiation properties	G01B9/02001	G01B9/02001		152
G01B9/02002	10	using two or more frequencies	G01B9/02002	G01B9/02002		359
G01B9/02003	11	using beat frequencies	G01B9/02003	G01B9/02003		464
G01B9/02004	11	using frequency scans	G01B9/02004	G01B9/02004		698
G01B9/02005	11	{using discrete frequency stepping or switching}	G01B9/02002	G01B9/02		53
G01B9/02007	10	{Two or more frequencies or sources used for interferometric measurement (using only beat G01B9/02003)}	G01B9/02001	G01B9/02		794
G01B9/02008	11	{by using a frequency comb}	G01B9/02001	G01B9/02		78
G01B9/02009	11	{by using two or more low coherence lengths using different or varying spectral width}	G01B9/02001	G01B9/02		35
G01B9/0201	10	{using temporal phase variation}	G01B9/02001	G01B9/02		346
G01B9/02011	10	{using temporal polarization variation}	G01B9/02001	G01B9/02		136
G01B9/02012	10	{using temporal intensity variation}	G01B9/02001	G01B9/02		97
G01B9/02014	11	{by using pulsed light}	G01B9/02001	G01B9/02		132
G01B9/02015	9	characterised by the beam path configuration	G01B9/02015	G01B9/02015		471
G01B9/02016	10	{contacting two or more objects}	G01B9/02015	G01B9/02		54
G01B9/02017	10	with multiple interactions between the target object and light beams, e.g. beam reflections occurring from different locations	G01B9/02017	G01B9/02017		48
G01B9/02018	11	Multipass interferometers, e.g. double-pass	G01B9/02018	G01B9/02018		235
G01B9/02019	11	{contacting different points on same face of object}	G01B9/02017	G01B9/02		275
G01B9/02021	11	{contacting different faces of object, e.g. opposite faces}	G01B9/02017	G01B9/02		291
G01B9/02022	10	{contacting one object by grazing incidence}	G01B9/02015	G01B9/02		133
G01B9/02023	10	{Indirect probing of object, e.g. via influence on cavity or fibre}	G01B9/02015	G01B9/02		105
G01B9/02024	10	{Measuring in transmission, i.e. light traverses the object}	G01B9/02015	G01B9/02		154
G01B9/02025	10	{Interference between three or more discrete surfaces}	G01B9/02015	G01B9/02		46
G01B9/02027	10	{Two or more interferometric channels or interferometers}	G01B9/02015	G01B9/02		724
G01B9/02028	11	{Two or more reference or object arms in one interferometer}	G01B9/02015	G01B9/02		352
G01B9/02029	10	{Combination with non-interferometric systems, i.e. for measuring the object}	G01B9/02015	G01B9/02		87
G01B9/0203	11	{With imaging systems}	G01B9/02015	G01B9/02		341
G01B9/02031	11	{With non-optical systems, e.g. tactile}	G01B9/02015	G01B9/02		28
G01B9/02032	10	{generating a spatial carrier frequency, e.g. by creating lateral or angular offset between reference and object beam (shearing interferometers G01B9/02098)}	G01B9/02015	G01B9/02		156
G01B9/02034	9	{characterised by particularly shaped beams or wavefronts}	G01B9/02	G01B9/02		73
G01B9/02035	10	{Shaping the focal point, e.g. elongated focus}	G01B9/02	G01B9/02		54
G01B9/02036	11	{by using chromatic effects, e.g. a wavelength dependent focal point}	G01B9/02	G01B9/02		27
G01B9/02037	11	{by generating a transverse line focus}	G01B9/02	G01B9/02		20
G01B9/02038	10	{Shaping the wavefront, e.g. generating a spherical wavefront}	G01B9/02	G01B9/02		100
G01B9/02039	11	{by matching the wavefront with a particular object surface shape}	G01B9/02	G01B9/02		236
G01B9/02041	9	{characterised by particular imaging or detection techniques}	G01B9/02	G01B9/02		329
G01B9/02042	10	{Confocal imaging}	G01B9/02	G01B9/02		100
G01B9/02043	10	{Imaging of the Fourier or pupil or back focal plane, i.e. angle resolved imaging}	G01B9/02	G01B9/02		89
G01B9/02044	10	{Imaging in the frequency domain, e.g. by using a spectrometer}	G01B9/02	G01B9/02		592
G01B9/02045	10	{using the Doppler effect}	G01B9/02	G01B9/02		163
G01B9/02047	10	{using digital holographic imaging, e.g. lensless phase imaging without hologram in the reference path}	G01B9/02	G01B9/02		143
G01B9/02048	10	{Rough and fine measurement}	G01B9/02	G01B9/02		78
G01B9/02049	9	{characterised by particular mechanical design details}	G01B9/02	G01B9/02		277
G01B9/0205	10	{of probe head}	G01B9/02	G01B9/02		225
G01B9/02051	10	{Integrated design, e.g. on-chip or monolithic}	G01B9/02	G01B9/02		235
G01B9/02052	10	{Protecting, e.g. shock absorbing, arrangements}	G01B9/02	G01B9/02		63
G01B9/02054	10	{Hand held}	G01B9/02	G01B9/02		28
G01B9/02055	9	Reduction or prevention of errors; Testing; Calibration	G01B9/02055	G01B9/02055		252
G01B9/02056	10	Passive reduction of errors	G01B9/02056	G01B9/02056		140
G01B9/02057	11	{by using common path configuration, i.e. reference and object path almost entirely overlapping}	G01B9/02056	G01B9/02		568
G01B9/02058	11	{by particular optical compensation or alignment elements, e.g. dispersion compensation}	G01B9/02056	G01B9/02		203
G01B9/02059	11	{Reducing effect of parasitic reflections, e.g. cyclic errors}	G01B9/02056	G01B9/02		122
G01B9/02061	11	Reduction or prevention of effects of tilts or misalignment	G01B9/02061	G01B9/02061		168
G01B9/02062	10	{Active error reduction, i.e. varying with time}	G01B9/02055	G01B9/02		48
G01B9/02063	11	{by particular alignment of focus position, e.g. dynamic focussing in optical coherence tomography}	G01B9/02055	G01B9/02		167
G01B9/02064	11	{by particular adjustment of coherence gate, i.e. adjusting position of zero path difference in low coherence interferometry}	G01B9/02055	G01B9/02		98
G01B9/02065	12	{using a second interferometer before or after measuring interferometer}	G01B9/02055	G01B9/02		124
G01B9/02067	11	{by electronic control systems, i.e. using feedback acting on optics or light}	G01B9/02055	G01B9/02		165
G01B9/02068	12	{Auto-alignment of optical elements}	G01B9/02055	G01B9/02		157
G01B9/02069	12	{Synchronization of light source or manipulator and detector}	G01B9/02055	G01B9/02		238
G01B9/0207	10	{Error reduction by correction of the measurement signal based on independently determined error sources, e.g. using a reference interferometer}	G01B9/02055	G01B9/02		294
G01B9/02071	11	{by measuring path difference independently from interferometer}	G01B9/02055	G01B9/02		75
G01B9/02072	11	{by calibration or testing of interferometer}	G01B9/02055	G01B9/02		386
G01B9/02074	12	{of the detector}	G01B9/02055	G01B9/02		54
G01B9/02075	10	{of particular errors}	G01B9/02055	G01B9/02		102
G01B9/02076	11	{Caused by motion}	G01B9/02055	G01B9/02		81
G01B9/02077	12	{of the object}	G01B9/02055	G01B9/02		99
G01B9/02078	11	{Caused by ambiguity}	G01B9/02055	G01B9/02		99
G01B9/02079	12	{Quadrature detection, i.e. detecting relatively phase-shifted signals}	G01B9/02055	G01B9/02		67
G01B9/02081	13	{simultaneous quadrature detection, e.g. by spatial phase shifting}	G01B9/02055	G01B9/02		264
G01B9/02082	11	{Caused by speckles}	G01B9/02055	G01B9/02		71
G01B9/02083	9	{characterised by particular signal processing and presentation}	G01B9/02	G01B9/02		599
G01B9/02084	10	{Processing in the Fourier or frequency domain when not imaged in the frequency domain}	G01B9/02	G01B9/02		228
G01B9/02085	10	{Combining two or more images of different regions}	G01B9/02	G01B9/02		99
G01B9/02087	10	{Combining two or more images of the same region}	G01B9/02	G01B9/02		195
G01B9/02088	10	{Matching signals with a database}	G01B9/02	G01B9/02		46
G01B9/02089	10	{Displaying the signal, e.g. for user interaction}	G01B9/02	G01B9/02		82
G01B9/0209	9	Low-coherence interferometers	G01B9/0209	G01B9/0209		874
G01B9/02091	10	Tomographic interferometers, e.g. based on optical coherence	G01B9/02091	G01B9/02091		2075
G01B9/02092	9	{Self-mixing interferometers, i.e. feedback of light from object into laser cavity}	G01B9/02	G01B9/0209		171
G01B9/02094	9	{Speckle interferometers, i.e. for detecting changes in speckle pattern}	G01B9/02	G01B9/0209		103
G01B9/02095	10	{detecting deformation from original shape}	G01B9/02	G01B9/0209		83
G01B9/02096	10	{detecting a contour or curvature}	G01B9/02	G01B9/0209		43
G01B9/02097	9	Self-interferometers	G01B9/02097	G01B9/02097		150
G01B9/02098	10	Shearing interferometers	G01B9/02098	G01B9/02098		155
G01B9/021	9	using holographic techniques	G01B9/021	G01B9/021		423
G01B9/023	10	for contour producing (G01B9/025&#160;-&#160;G01B9/029 take precedence)	G01B9/023	G01B9/023		51
G01B9/025	10	Double exposure technique	G01B9/025	G01B9/025		30
G01B9/027	10	in real time	G01B9/027	G01B9/027		20
G01B9/029	10	by time averaging	G01B9/029	G01B9/029		
G01B9/04	8	Measuring microscopes	G01B9/04	G01B9/04		732
G01B9/06	8	Measuring telescopes	G01B9/06	G01B9/06		52
G01B9/08	8	Optical projection comparators	G01B9/08	G01B9/08		154
G01B9/10	8	Goniometers for measuring angles between surfaces	G01B9/10	G01B9/10		45
G01B11/00	7	Measuring arrangements characterised by the use of optical techniques<br><br><u>NOTE</u><br><br>When classifying in this group, specific optical measuring instruments can be further classified in group G01B9/00.	G01B11/00	G01B11/00		15153
G01B11/002	8	{for measuring two or more coordinates}	G01B11/00	G01B11/00		6964
G01B11/005	9	{coordinate measuring machines}	G01B11/00	G01B11/00		1414
G01B11/007	10	{feeler heads therefor}	G01B11/00	G01B11/00		502
G01B11/02	8	for measuring length, width or thickness (G01B11/08 takes precedence)	G01B11/02	G01B11/02		11143
G01B11/022	9	{by means of tv-camera scanning}	G01B11/02	G01B11/02		2385
G01B11/024	9	{by means of diode-array scanning}	G01B11/02	G01B11/02		783
G01B11/026	9	{by measuring distance between sensor and object (G01B11/0608 takes precedence)}	G01B11/02	G01B11/02		3540
G01B11/028	9	{by measuring lateral position of a boundary of the object (G01B11/022, G01B11/024, G01B11/04 take precedence)}	G01B11/02	G01B11/02		851
G01B11/03	9	by measuring coordinates of points	G01B11/03	G01B11/03		1538
G01B11/04	9	specially adapted for measuring length or width of objects while moving	G01B11/04	G01B11/04		589
G01B11/043	10	{for measuring length}	G01B11/04	G01B11/04		976
G01B11/046	10	{for measuring width}	G01B11/04	G01B11/04		700
G01B11/06	9	for measuring thickness {; e.g. of sheet material (thickness measurement by thermal means G01B21/085)}	G01B11/06	G01B11/06		4917
G01B11/0608	10	{Height gauges}	G01B11/06	G01B11/06		3598
G01B11/0616	10	{of coating}	G01B11/06	G01B11/06		1132
G01B11/0625	11	{with measurement of absorption or reflection}	G01B11/06	G01B11/06		1490
G01B11/0633	12	{using one or more discrete wavelengths}	G01B11/06	G01B11/06		265
G01B11/0641	11	{with measurement of polarization}	G01B11/06	G01B11/06		371
G01B11/065	12	{using one or more discrete wavelengths}	G01B11/06	G01B11/06		114
G01B11/0658	11	{with measurement of emissivity or reradiation}	G01B11/06	G01B11/06		180
G01B11/0666	11	{using an exciting beam and a detection beam including surface acoustic waves [SAW]}	G01B11/06	G01B11/06		72
G01B11/0675	11	{using interferometry}	G01B11/06	G01B11/06		683
G01B11/0683	11	{measurement during deposition or removal of the layer}	G01B11/06	G01B11/06		553
G01B11/0691	10	{of objects while moving (G01B11/0616 takes precedence)}	G01B11/06	G01B11/06		733
G01B11/08	8	for measuring diameters	G01B11/08	G01B11/08		2792
G01B11/10	9	of objects while moving	G01B11/10	G01B11/10		287
G01B11/105	10	{using photoelectric detection means}	G01B11/10	G01B11/10		630
G01B11/12	9	internal diameters	G01B11/12	G01B11/12		1126
G01B11/14	8	for measuring distance or clearance between spaced objects or spaced apertures (G01B11/26 takes precedence; rangefinders G01C3/00)	G01B11/14	G01B11/14		5888
G01B11/16	8	for measuring the deformation in a solid, e.g. optical strain gauge	G01B11/16	G01B11/16		7454
G01B11/161	9	{by interferometric means}	G01B11/16	G01B11/16		678
G01B11/162	10	{by speckle- or shearing interferometry}	G01B11/16	G01B11/16		341
G01B11/164	10	{by holographic interferometry}	G01B11/16	G01B11/16		85
G01B11/165	9	{by means of a grating deformed by the object}	G01B11/16	G01B11/16		1397
G01B11/167	9	{by projecting a pattern on the object}	G01B11/16	G01B11/16		299
G01B11/168	9	{by means of polarisation}	G01B11/16	G01B11/16		129
G01B11/18	9	{using photoelastic elements}	G01B11/16	G01B11/18		1678
G01B11/20	9	{using brittle lacquer}	G01B11/16	G01B11/20		32
G01B11/22	8	for measuring depth	G01B11/22	G01B11/22		2565
G01B11/24	8	for measuring contours or curvatures	G01B11/24	G01B11/24		15384
G01B11/2408	9	{for measuring roundness}	G01B11/24	G01B11/24		752
G01B11/2416	9	{of gears (optical projection profile comparators G01B9/08)}	G01B11/24	G01B11/24		215
G01B11/2425	9	{of screw-threads}	G01B11/24	G01B11/24		241
G01B11/2433	9	{for measuring outlines by shadow casting}	G01B11/24	G01B11/24		1337
G01B11/2441	9	{using interferometry}	G01B11/24	G01B11/24		2643
G01B11/245	9	using a plurality of fixed, simultaneously operating transducers ({G01B11/2408&#160;-&#160;G01B11/2425, }G01B11/255 take precedence)	G01B11/245	G01B11/245		1593
G01B11/25	9	by projecting a pattern, e.g. {one or more lines,} moir&#233; fringes on the object (G01B11/255 takes precedence {; image analysis for depth or shape recovery G06T7/50})	G01B11/25	G01B11/25		3271
G01B11/2504	10	{Calibration devices}	G01B11/25	G01B11/25		595
G01B11/2509	10	{Color coding}	G01B11/25	G01B11/25		335
G01B11/2513	10	{with several lines being projected in more than one direction, e.g. grids, patterns}	G01B11/25	G01B11/25		1869
G01B11/2518	10	{Projection by scanning of the object}	G01B11/25	G01B11/25		1469
G01B11/2522	11	{the position of the object changing and being recorded}	G01B11/25	G01B11/25		466
G01B11/2527	11	{with phase change by in-plane movement of the patern}	G01B11/25	G01B11/25		498
G01B11/2531	10	{using several gratings, projected with variable angle of incidence on the object, and one detection device}	G01B11/25	G01B11/25		197
G01B11/2536	10	{using several gratings with variable grating pitch, projected on the object with the same angle of incidence}	G01B11/25	G01B11/25		180
G01B11/254	10	{Projection of a pattern, viewing through a pattern, e.g. moir&#233;}	G01B11/25	G01B11/25		1586
G01B11/2545	10	{with one projection direction and several detection directions, e.g. stereo}	G01B11/25	G01B11/25		889
G01B11/255	9	for measuring radius of curvature {(measuring diameter G01B11/08)}	G01B11/255	G01B11/255		715
G01B11/26	8	for measuring angles or tapers; for testing the alignment of axes	G01B11/26	G01B11/26		6986
G01B11/27	9	for testing the alignment of axes {(means for centering or aligning a light guide within a ferrule G02B6/3834)}	G01B11/27	G01B11/27		2470
G01B11/272	10	{using photoelectric detection means}	G01B11/27	G01B11/27		2030
G01B11/275	9	for testing wheel alignment	G01B11/275	G01B11/275		628
G01B11/2755	10	{using photoelectric detection means}	G01B11/275	G01B11/275		555
G01B11/28	8	for measuring areas	G01B11/28	G01B11/28		1383
G01B11/285	9	{using photoelectric detection means}	G01B11/28	G01B11/28		481
G01B11/30	8	for measuring roughness or irregularity of surfaces	G01B11/30	G01B11/30		4099
G01B11/303	9	{using photoelectric detection means}	G01B11/30	G01B11/30		2130
G01B11/306	9	{for measuring evenness}	G01B11/30	G01B11/30		1593
G01B13/00	7	Measuring arrangements characterised by the use of fluids	G01B13/00	G01B13/00		637
G01B13/02	8	for measuring length, width or thickness (G01B13/08 takes precedence)	G01B13/02	G01B13/02		256
G01B13/03	9	by measuring coordinates of points	G01B13/03	G01B13/03		7
G01B13/04	9	specially adapted for measuring length or width of objects while moving	G01B13/04	G01B13/04		31
G01B13/06	9	for measuring thickness	G01B13/06	G01B13/06		183
G01B13/065	10	{Height gauges}	G01B13/06	G01B13/06		104
G01B13/08	8	for measuring diameters	G01B13/08	G01B13/08		220
G01B13/10	9	internal diameters	G01B13/10	G01B13/10		371
G01B13/12	8	for measuring distance or clearance between spaced objects or spaced apertures (G01B13/18 takes precedence)	G01B13/12	G01B13/12		240
G01B13/14	8	for measuring depth	G01B13/14	G01B13/14		82
G01B13/16	8	for measuring contours or curvatures	G01B13/16	G01B13/16		215
G01B13/18	8	for measuring angles or tapers; for testing the alignment of axes	G01B13/18	G01B13/18		129
G01B13/19	9	for testing the alignment of axes	G01B13/19	G01B13/19		48
G01B13/195	9	for testing wheel alignment	G01B13/195	G01B13/195		5
G01B13/20	8	for measuring areas, e.g. pneumatic planimeters	G01B13/20	G01B13/20		79
G01B13/22	8	for measuring roughness or irregularity of surfaces	G01B13/22	G01B13/22		254
G01B13/24	8	for measuring the deformation in a solid	G01B13/24	G01B13/24		310
G01B15/00	7	Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons (characterised by the use of optical techniques G01B9/00, G01B11/00)	G01B15/00	G01B15/00		1666
G01B15/02	8	for measuring thickness	G01B15/02	G01B15/02		1482
G01B15/025	9	{by measuring absorption}	G01B15/02	G01B15/02		503
G01B15/04	8	for measuring contours or curvatures	G01B15/04	G01B15/04		679
G01B15/045	9	{by measuring absorption}	G01B15/04	G01B15/04		149
G01B15/06	8	for measuring the deformation in a solid	G01B15/06	G01B15/06		689
G01B15/08	8	for measuring roughness or irregularity of surfaces	G01B15/08	G01B15/08		167
G01B17/00	7	Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations	G01B17/00	G01B17/00		2324
G01B17/02	8	for measuring thickness	G01B17/02	G01B17/02		2441
G01B17/025	9	{for measuring thickness of coating}	G01B17/02	G01B17/02		497
G01B17/04	8	for measuring the deformation in a solid, e.g. by vibrating string	G01B17/04	G01B17/04		667
G01B17/06	8	for measuring contours or curvatures	G01B17/06	G01B17/06		492
G01B17/08	8	for measuring roughness or irregularity of surfaces	G01B17/08	G01B17/08		277
G01B21/00	7	Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant<br><br><u>NOTE</u><br><br>Measuring arrangements or details thereof covered by two or more of groups G01B3/00 - G01B17/00 are classified in this group if no single other group can be selected as being predominantly applicable.	G01B21/00	G01B21/00		6018
G01B21/02	8	for measuring length, width, or thickness (G01B21/10 takes precedence)	G01B21/02	G01B21/02		6571
G01B21/04	9	by measuring coordinates of points	G01B21/04	G01B21/04		1530
G01B21/042	10	{Calibration or calibration artifacts (G01B3/30, G01B9/02072 take precedence)}	G01B21/04	G01B21/04		2287
G01B21/045	10	{Correction of measurements (G01B9/02055 takes precedence)}	G01B21/04	G01B21/04		1594
G01B21/047	10	{Accessories, e.g. for positioning, for tool-setting, for measuring probes}	G01B21/04	G01B21/04		1232
G01B21/06	9	specially adapted for measuring length or width of objects while moving	G01B21/06	G01B21/06		767
G01B21/065	10	{for stretchable materials}	G01B21/06	G01B21/06		139
G01B21/08	9	for measuring thickness	G01B21/08	G01B21/08		4120
G01B21/085	10	{using thermal means}	G01B21/08	G01B21/08		339
G01B21/10	8	for measuring diameters	G01B21/10	G01B21/10		1399
G01B21/12	9	of objects while moving	G01B21/12	G01B21/12		169
G01B21/14	9	internal diameters {(of boreholes or wells E21B47/08)}	G01B21/14	G01B21/14		696
G01B21/16	8	for measuring distance of clearance between spaced objects	G01B21/16	G01B21/16		2677
G01B21/18	8	for measuring depth	G01B21/18	G01B21/18		1057
G01B21/20	8	for measuring contours or curvatures, e.g. determining profile	G01B21/20	G01B21/20		3359
G01B21/22	8	for measuring angles or tapers; for testing the alignment of axes	G01B21/22	G01B21/22		3863
G01B21/24	9	for testing alignment of axes	G01B21/24	G01B21/24		1198
G01B21/26	9	for testing wheel alignment	G01B21/26	G01B21/26		302
G01B21/28	8	for measuring areas	G01B21/28	G01B21/28		542
G01B21/30	8	for measuring roughness or irregularity of surfaces	G01B21/30	G01B21/30		2669
G01B21/32	8	for measuring the deformation in a solid	G01B21/32	G01B21/32		5270
G01B2210/00	7	Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors	CPCONLY	G01B2210/00		11
G01B2210/10	8	Wheel alignment	CPCONLY	G01B2210/10		85
G01B2210/12	9	Method or fixture for calibrating the wheel aligner	CPCONLY	G01B2210/12		140
G01B2210/14	9	One or more cameras or other optical devices capable of acquiring a two-dimensional image	CPCONLY	G01B2210/14		109
G01B2210/143	10	One or more cameras on each side of a vehicle in the main embodiment	CPCONLY	G01B2210/143		186
G01B2210/146	10	Two or more cameras imaging the same area	CPCONLY	G01B2210/146		81
G01B2210/16	9	Active or passive device attached to the chassis of a vehicle	CPCONLY	G01B2210/16		120
G01B2210/18	9	Specially developed for using with motorbikes or other two-wheeled vehicles	CPCONLY	G01B2210/18		43
G01B2210/20	9	Vehicle in a state of translatory motion	CPCONLY	G01B2210/20		83
G01B2210/22	9	Wheels in a state of motion supported on rollers, rotating platform or other structure substantially capable of only one degree of rotational freedom	CPCONLY	G01B2210/22		82
G01B2210/24	9	Specially developed for using with trucks or other heavy-duty vehicles	CPCONLY	G01B2210/24		77
G01B2210/26	9	Algorithms, instructions, databases, computerized methods and graphical user interfaces employed by a user in conjunction with the wheel aligner	CPCONLY	G01B2210/26		144
G01B2210/28	9	Beam projector and related sensors, camera, inclinometer or other active sensing or projecting device	CPCONLY	G01B2210/28		75
G01B2210/283	10	Beam projectors and related sensors	CPCONLY	G01B2210/283		208
G01B2210/286	11	Projecting a light pattern on the wheel or vehicle body	CPCONLY	G01B2210/286		60
G01B2210/30	9	Reference markings, reflector, scale or other passive device	CPCONLY	G01B2210/30		215
G01B2210/303	10	fixed to the ground or to the measuring station	CPCONLY	G01B2210/303		90
G01B2210/306	10	Mirror, prism or other reflector	CPCONLY	G01B2210/306		81
G01B2210/40	8	Caliper-like sensors	CPCONLY	G01B2210/40		26
G01B2210/42	9	with one or more detectors on a single side of the object to be measured and with a backing surface of support or reference on the other side	CPCONLY	G01B2210/42		73
G01B2210/44	9	with detectors on both sides of the object to be measured	CPCONLY	G01B2210/44		162
G01B2210/46	9	with one or more detectors on a single side of the object to be measured and with a transmitter on the other side	CPCONLY	G01B2210/46		43
G01B2210/48	9	for measurement of a wafer	CPCONLY	G01B2210/48		44
G01B2210/50	8	Using chromatic effects to achieve wavelength-dependent depth resolution	CPCONLY	G01B2210/50		379
G01B2210/52	8	Combining or merging partially overlapping images to an overall image	CPCONLY	G01B2210/52		270
G01B2210/54	8	Revolving an optical measuring instrument around a body	CPCONLY	G01B2210/54		118
G01B2210/56	8	Measuring geometric parameters of semiconductor structures, e.g. profile, critical dimensions or trench depth	CPCONLY	G01B2210/56		994
G01B2210/58	8	Wireless transmission of information between a sensor or probe and a control or evaluation unit	CPCONLY	G01B2210/58		632
G01B2210/60	8	Unique sensor identification	CPCONLY	G01B2210/60		108
G01B2210/62	8	Support for workpiece air film or bearing with positive or negative pressure	CPCONLY	G01B2210/62		32
G01B2210/64	8	Interconnection or interfacing through or under capping or via rear of substrate in microsensors	CPCONLY	G01B2210/64		12
G01B2210/66	8	Rock or ground anchors having deformation measuring means	CPCONLY	G01B2210/66		72
G01B2290/00	7	Aspects of interferometers not specifically covered by any group under G01B9/02	CPCONLY	G01B2290/00		2
G01B2290/10	8	Astronomic interferometers	CPCONLY	G01B2290/10		31
G01B2290/15	8	Cat eye, i.e. reflection always parallel to incoming beam	CPCONLY	G01B2290/15		167
G01B2290/20	8	Dispersive element for generating dispersion	CPCONLY	G01B2290/20		49
G01B2290/25	8	Fabry-Perot in interferometer, e.g. etalon, cavity	CPCONLY	G01B2290/25		216
G01B2290/30	8	Grating as beam-splitter	CPCONLY	G01B2290/30		187
G01B2290/35	8	Mechanical variable delay line	CPCONLY	G01B2290/35		209
G01B2290/40	8	Non-mechanical variable delay line	CPCONLY	G01B2290/40		65
G01B2290/45	8	Multiple detectors for detecting interferometer signals	CPCONLY	G01B2290/45		580
G01B2290/50	8	Pupil plane manipulation, e.g. filtering light of certain reflection angles	CPCONLY	G01B2290/50		43
G01B2290/55	8	Quantum effects	CPCONLY	G01B2290/55		47
G01B2290/60	8	Reference interferometer, i.e. additional interferometer not interacting with object	CPCONLY	G01B2290/60		236
G01B2290/65	8	Spatial scanning object beam	CPCONLY	G01B2290/65		208
G01B2290/70	8	Using polarization in the interferometer	CPCONLY	G01B2290/70		1258
