|  | G |
SECTION G — PHYSICS

INSTRUMENTS

|  | G01 |
MEASURING (counting Fulltext... Hierarchy... Expanded...G06M); TESTING

|  | G01B |
MEASURING LENGTH, THICKNESS, OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS (measuring human body Fulltext... Hierarchy... Expanded...A41H 1/00, Fulltext... Hierarchy... Expanded...A43D 1/02, Fulltext... Hierarchy... Expanded...A61B 5/10; measuring appliances combined with walking-sticks Fulltext... Hierarchy... Expanded...A45B 3/08; sorting according to dimensions Fulltext... Hierarchy... Expanded...B07; tool-setting or drawing instruments not specially modified for measuring Fulltext... Hierarchy... Expanded...B23B 49/00, Fulltext... Hierarchy... Expanded...B23Q 15/00, Fulltext... Hierarchy... Expanded...B23Q 17/00, Fulltext... Hierarchy... Expanded...B43L; combinations of measuring devices with writing-appliances Fulltext... Hierarchy... Expanded...B43K 29/08; geodetical, nautical or aeronautical measuring, surveying, rangefinding Fulltext... Hierarchy... Expanded...G01C; measuring force Fulltext... Hierarchy... Expanded...G01L 1/00; investigating particle size, investigating surface area of porous material Fulltext... Hierarchy... Expanded...G01N; using radar, using sonar Fulltext... Hierarchy... Expanded...G01S; geophysical measuring Fulltext... Hierarchy... Expanded...G01V; measuring length or roll diameter of film in cameras or projectors Fulltext... Hierarchy... Expanded...G03B 1/60; combinations of measuring devices with means for controlling or regulating Fulltext... Hierarchy... Expanded...G05; measuring elapsed travel of recording medium in recording and playback equipment, sensing diameter of record in autochange gramophones Fulltext... Hierarchy... Expanded...G11B; means structurally associated with electric rotary current collectors for indicating brush wear Fulltext... Hierarchy... Expanded...H01R 39/58; indicating consumption of electrodes in arc lamps Fulltext... Hierarchy... Expanded...H05B 31/34)

|  | G01B |
Note(s) Attention is drawn to the notes immediately following the class title (Fulltext... Hierarchy... Expanded...G01). Measuring, by methods of general application, displacements, e.g. of the pointer of a measuring instrument, which are caused by variables of which the measurement is not covered by this sub-class, is dealt with in sub-class Fulltext... Hierarchy... Expanded...G01D. The groups of this sub-class are distinguished by the means of measurement which is of major importance. Thus the mere application of other means for giving a final indication does not affect the classification. Machines operated on similar principles to the hand-held devices specified in this sub-class are classified with these devices.

|  | G01B 1/00 |
Measuring instruments characterised by the selection of material therefor

|  | G01B 3/00 |
Instruments as specified in the sub-groups and characterised by measuring mechanically the dimensions of objects or the distance between spaced objects or spaced apertures (arrangements of such instruments for measuring particular objects Fulltext... Hierarchy... Expanded...G01B 5/00) [2]

|  | G01B 3/02 |
· | Rulers or tapes with scales or marks for direct reading

|  | G01B 3/04 |
· · | rigid

|  | G01B 3/06 |
· · · | folding

|  | G01B 3/08 |
· · · | extensible

|  | G01B 3/10 |
· · | flexible

|  | G01B 3/11 |
· | Chains for measuring length

|  | G01B 3/12 |
· | Measuring wheels

|  | G01B 3/14 |
· | Templates for checking contours

|  | G01B 3/16 |
· | Compasses, i.e. with a pair of pivoted arms

|  | G01B 3/18 |
· | Micrometers

|  | G01B 3/20 |
· | Slide gauges

|  | G01B 3/22 |
· | Feeler-pin gauges, e.g. dial gauges (for determining profiles Fulltext... Hierarchy... Expanded...G01B 5/20)

|  | G01B 3/24 |
· · | with open yoke, i.e. calipers

|  | G01B 3/26 |
· · | Plug gauges

|  | G01B 3/28 |
· · | Depth gauges

|  | G01B 3/30 |
· | 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

|  | G01B 3/32 |
· · | Holders therefor

|  | G01B 3/34 |
· | Ring or other apertured gauges, e.g. "go/no-go" gauge

|  | G01B 3/36 |
· · | for external screw threads

|  | G01B 3/38 |
· | 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

|  | G01B 3/40 |
· · | for external screw threads

|  | G01B 3/42 |
· · | of limit-gauge type, i.e. "go/no-go" (Fulltext... Hierarchy... Expanded...G01B 3/40 takes precedence)

|  | G01B 3/44 |
· · · | preadjustable for wear or tolerance

|  | G01B 3/46 |
· | Plug gauges for internal dimensions with engaging surfaces which are at a fixed distance, although they may be preadjustable

|  | G01B 3/48 |
· · | for internal screw threads

|  | G01B 3/50 |
· · | of limit-gauge type, i.e. "go/no-go" (Fulltext... Hierarchy... Expanded...G01B 3/48 takes precedence)

|  | G01B 3/52 |
· · · | preadjustable for wear or tolerance

|  | G01B 3/56 |
· | Gauges for measuring angles or tapers, e.g. conical calipers

|  | G01B 5/00 |
Measuring arrangements characterised measuring mechanically the dimensions of objects or the distance between spaced objects or spaced apertures (instruments of the kinds covered by group Fulltext... Hierarchy... Expanded...G01B 3/00 per se Fulltext... Hierarchy... Expanded...G01B 3/00) [2]

|  | G01B 5/02 |
· | for measuring length, width, or thickness (Fulltext... Hierarchy... Expanded...G01B 5/08 takes precedence)

|  | G01B 5/04 |
· · | specially adapted for measuring length or width of objects while moving

|  | G01B 5/06 |
· · | for measuring thickness, e.g. of sheet material

|  | G01B 5/08 |
· | for measuring diameters

|  | G01B 5/10 |
· · | of objects while moving, e.g. cable

|  | G01B 5/12 |
· · | internal diameters

|  | G01B 5/14 |
· | for measuring distance or clearance between spaced objects or spaced apertures (Fulltext... Hierarchy... Expanded...G01B 5/24 takes precedence)

|  | G01B 5/16 |
· · | between a succession of regularly spaced objects or regularly spaced apertures, e.g. screw threads, stamp perforations

|  | G01B 5/18 |
· | for measuring depth

|  | G01B 5/20 |
· | for measuring contours or curvatures, e.g. determining profile

|  | G01B 5/22 |
· · | Spherometers

|  | G01B 5/24 |
· | for measuring angles or tapers; for testing the alignment of axes

|  | G01B 5/25 |
· · | for alignment of axes

|  | G01B 5/255 |
· · | for testing wheel alignment

|  | G01B 5/26 |
· | for measuring areas, e.g. planimeter (integrators in general Fulltext... Hierarchy... Expanded...G06G)

|  | G01B 5/28 |
· | for measuring roughness or irregularity of surfaces

|  | G01B 5/30 |
· | for measuring the deformation in a solid, e.g. mechanical strain gauge

|  | G01B 7/00 |
Measuring arrangements characterised by the use of electric or magnetic means

|  | G01B 7/02 |
· | for measuring length, width, or thickness (Fulltext... Hierarchy... Expanded...G01B 7/12 takes precedence)

|  | G01B 7/04 |
· · | specially adapted for measuring length or width of objects while moving

|  | G01B 7/06 |
· · | for measuring thickness, e.g. of sheet material, of coating

|  | G01B 7/08 |
· · · | using capacitive means

|  | G01B 7/10 |
· · · | using magnetic means, e.g. by measuring change of reluctance

|  | G01B 7/12 |
· | for measuring diameters

|  | G01B 7/14 |
· | for measuring distance or clearance between spaced objects or spaced apertures (Fulltext... Hierarchy... Expanded...G01B 7/30 takes precedence)

|  | G01B 7/16 |
· | for measuring the deformation in a solid, e.g. resistance strain gauge

|  | G01B 7/18 |
· · | using change in resistance

|  | G01B 7/20 |
· · · | formed by printed-circuit technique

|  | G01B 7/22 |
· · | using change in capacitance

|  | G01B 7/24 |
· · | using change in magnetic properties

|  | G01B 7/26 |
· | for measuring depth

|  | G01B 7/28 |
· | for measuring contours or curvatures, e.g. determining profile

|  | G01B 7/30 |
· | for measuring angles or tapers; for testing the alignment of axes

|  | G01B 7/31 |
· · | for alignment of axes

|  | G01B 7/315 |
· · | for testing wheel alignment

|  | G01B 7/32 |
· | for measuring areas (integrators in general Fulltext... Hierarchy... Expanded...G06G)

|  | G01B 7/34 |
· | for measuring roughness or irregularity of surfaces

|  | G01B 9/00 |
Instruments as specified in the sub-groups and characterised by measuring optically the dimensions of objects or the distance between spaced objects or spaced apertures (arrangements of such instruments for measuring particular objects Fulltext... Hierarchy... Expanded...G01B 11/00)

|  | G01B 9/02 |
· | Interferometers

|  | G01B 9/021 |
· · | using holographic techniques [2]

|  | G01B 9/023 |
· · · | for contour producing (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G01B 9/025-G01B 9/029 take precedence) [2]

|  | G01B 9/025 |
· · · | Double-exposure technique [2]

|  | G01B 9/027 |
· · · | in real time [2]

|  | G01B 9/029 |
· · · | by time averaging [2]

|  | G01B 9/04 |
· | Measuring microscopes (microscopes per se Fulltext... Hierarchy... Expanded...G02B 21/00)

|  | G01B 9/06 |
· | Measuring telescopes (telescopes per se Fulltext... Hierarchy... Expanded...G02B 23/00)

|  | G01B 9/08 |
· | Optical projection comparators, e.g. for profile

|  | G01B 9/10 |
· | Goniometers

|  | G01B 11/00 |
Arrangements characterised by measuring optically the dimensions of objects or the distance between spaced objects or spaced apertures (instruments of the types covered by group Fulltext... Hierarchy... Expanded...G01B 9/00, per se Fulltext... Hierarchy... Expanded...G01B 9/00) [2]

|  | G01B 11/02 |
· | for measuring length, width, or thickness (Fulltext... Hierarchy... Expanded...G01B 11/08 takes precedence)

|  | G01B 11/04 |
· · | specially adapted for measuring length or width of objects while moving

|  | G01B 11/06 |
· · | for measuring thickness, e.g. of sheet material

|  | G01B 11/08 |
· | for measuring diameters

|  | G01B 11/10 |
· · | of objects while moving, e.g. cable

|  | G01B 11/12 |
· · | internal diameters

|  | G01B 11/14 |
· | for measuring distance or clearance between spaced objects or spaced apertures (Fulltext... Hierarchy... Expanded...G01B 11/26 takes precedence; rangefinders per se Fulltext... Hierarchy... Expanded...G01C)

|  | G01B 11/16 |
· | for measuring the deformation in a solid, e.g. optical strain gauge

|  | G01B 11/18 |
· · | using photoelastic elements

|  | G01B 11/20 |
· · | using brittle lacquer

|  | G01B 11/22 |
· | for measuring depth

|  | G01B 11/24 |
· | for measuring contours or curvatures, e.g. determining profile

|  | G01B 11/26 |
· | for measuring angles or tapers; for testing the alignment of axes

|  | G01B 11/27 |
· · | for alignment of axes

|  | G01B 11/275 |
· · | for testing wheel alignment

|  | G01B 11/28 |
· | for measuring areas (integrators in general Fulltext... Hierarchy... Expanded...G06G)

|  | G01B 11/30 |
· | for measuring roughness or irregularity of surfaces

|  | G01B 13/00 |
Measuring arrangements characterised by the use of fluids

|  | G01B 13/02 |
· | for measuring length, width, or thickness (Fulltext... Hierarchy... Expanded...G01B 13/08 takes precedence)

|  | G01B 13/04 |
· · | specially adapted for measuring length or width of objects while moving

|  | G01B 13/06 |
· · | for measuring thickness, e.g. of sheet material

|  | G01B 13/08 |
· | for measuring diameters

|  | G01B 13/10 |
· · | internal diameters

|  | G01B 13/12 |
· | for measuring distance or clearance between spaced objects or spaced apertures (Fulltext... Hierarchy... Expanded...G01B 13/18 takes precedence)

|  | G01B 13/14 |
· | for measuring depth

|  | G01B 13/16 |
· | for measuring contours or curvatures, e.g. determining profile

|  | G01B 13/18 |
· | for measuring angles or tapers; for testing the alignment of axes

|  | G01B 13/19 |
· · | for alignment of axes

|  | G01B 13/195 |
· · | for testing wheel alignment

|  | G01B 13/20 |
· | for measuring areas, e.g. pneumatic planimeter (integrators in general Fulltext... Hierarchy... Expanded...G06G)

|  | G01B 13/22 |
· | for measuring roughness or irregularity of surfaces

|  | G01B 15/00 |
Measuring arrangements characterised by the use of wave or particle radiation (Fulltext... Hierarchy... Expanded...G01B 9/00, Fulltext... Hierarchy... Expanded...G01B 11/00 take precedence; using reflection of electric pulses Fulltext... Hierarchy... Expanded...G01S; by radar technique Fulltext... Hierarchy... Expanded...G01S)

|  | G01B 15/02 |
· | for measuring thickness

|  | G01B 15/04 |
· | for measuring contours or curvatures, e.g. determining profile

|  | G01B 15/06 |
· | for measuring the deformation in a solid

|  | G01B 17/00 |
Measuring arrangements characterised by the use of subsonic, sonic, or ultrasonic vibrations (by sonar technique Fulltext... Hierarchy... Expanded...G01S)

|  | G01B 17/02 |
· | for measuring thickness

|  | G01B 17/04 |
· | for measuring the deformation in a solid, e.g. by vibrating string

|  | G01B 19/00 |
Measuring arrangements characterised by means of measurement specified in two or more of main groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G01B 3/00-G01B 17/00

|  | G01B 19/00 |
Note(s) Inventions are only to be classified in this group if no single other main group can be selected as being predominantly applicable. In classifying a combination of two or more of the techniques specified, the first applicable one of the sub-groups Fulltext... Hierarchy... Expanded...G01B 19/02, Fulltext... Hierarchy... Expanded...G01B 19/34, Fulltext... Hierarchy... Expanded...G01B 19/62, Fulltext... Hierarchy... Expanded...G01B 19/86 and Fulltext... Hierarchy... Expanded...G01B 19/94 takes precedence over any others of these sub-groups.

|  | G01B 19/02 |
· | using electric or magnetic means

|  | G01B 19/04 |
· · | for measuring length, width or thickness (Fulltext... Hierarchy... Expanded...G01B 19/12 takes precedence)

|  | G01B 19/06 |
· · · | specially adapted for measuring length or width or objects while moving

|  | G01B 19/08 |
· · · | for measuring thickness, e.g. of sheet material, of coating

|  | G01B 19/09 |
· · · · | using capacitive means

|  | G01B 19/10 |
· · · · | using magnetic means, e.g. by measuring change of reluctance

|  | G01B 19/12 |
· · | for measuring diameters

|  | G01B 19/14 |
· · | for measuring distance of clearance between spaced objects or spaced apertures (Fulltext... Hierarchy... Expanded...G01B 19/28 takes precedence)

|  | G01B 19/16 |
· · | for measuring the deformation in a solid

|  | G01B 19/18 |
· · · | using change in resistance

|  | G01B 19/19 |
· · · · | formed by printed-circuit technique

|  | G01B 19/20 |
· · · | using change in capacitance

|  | G01B 19/22 |
· · · | using change in magnetic properties

|  | G01B 19/24 |
· · | for measuring depth

|  | G01B 19/26 |
· · | for measuring contours or curvatures, e.g. determining profile

|  | G01B 19/28 |
· · | for measuring angles or tapers; for testing the alignment of axes

|  | G01B 19/29 |
· · · | for alignment or axes

|  | G01B 19/295 |
· · · | for testing wheel alignment

|  | G01B 19/30 |
· · | for measuring areas (integrators in general (Fulltext... Hierarchy... Expanded...G06G)

|  | G01B 19/32 |
· · | for measuring roughness or irregularity or surfaces

|  | G01B 19/34 |
· | using optical means, i.e. employing infra-red, visible, or ultra-violet light

|  | G01B 19/36 |
· · | for measuring length, width or thickness (Fulltext... Hierarchy... Expanded...G01B 19/40 takes precedence)

|  | G01B 19/37 |
· · · | specially adapted for measuring length or width of objects while moving

|  | G01B 19/38 |
· · · | for measuring thickness, el g. of sheet material

|  | G01B 19/40 |
· · | for measuring diameters

|  | G01B 19/42 |
· · · | of objects while moving, e.g. cable

|  | G01B 19/44 |
· · · | internal diameters

|  | G01B 19/46 |
· · | for measuring distance or clearance between spaced objects or spaced apertures (Fulltext... Hierarchy... Expanded...G01B 19/56 takes precedence, range finders per se Fulltext... Hierarchy... Expanded...G01C)

|  | G01B 19/48 |
· · | for measuring the deformation in a solid

|  | G01B 19/49 |
· · · | using photoelastic elements

|  | G01B 19/50 |
· · · | using brittle lacquer

|  | G01B 19/52 |
· · | for measuring depth

|  | G01B 19/54 |
· · | for measuring contours or curvatures, e.g. determining profile

|  | G01B 19/56 |
· · | for measuring angles or tapers; for testing the alignment of axes

|  | G01B 19/57 |
· · · | for alignment of axes

|  | G01B 19/575 |
· · · | for testing wheel alignment

|  | G01B 19/58 |
· · | for measuring areas (integration in general Fulltext... Hierarchy... Expanded...G06G)

|  | G01B 19/60 |
· · | for measuring roughness or irregularity of surfaces

|  | G01B 19/62 |
· | using fluid means

|  | G01B 19/64 |
· · | for measuring length, width, or thickness (Fulltext... Hierarchy... Expanded...G01B 19/70 takes precedence)

|  | G01B 19/66 |
· · · | specially adapted for measuring length or width of objects while moving

|  | G01B 19/68 |
· · · | for measuring thickness, e.g. of sheet material

|  | G01B 19/70 |
· · | for measuring diameters

|  | G01B 19/72 |
· · · | internal diameters

|  | G01B 19/74 |
· · | for measuring distance or clearance between spaced objects or spaced apertures (Fulltext... Hierarchy... Expanded...G01B 19/80 takes precedence)

|  | G01B 19/76 |
· · | for measuring depth

|  | G01B 19/78 |
· · | for measuring contours or curvatures, e.g. determining profile

|  | G01B 19/80 |
· · | for measuring angles or tapers; for testing the alignment of axes

|  | G01B 19/81 |
· · · | for alignment of axes

|  | G01B 19/815 |
· · · | for testing wheel alignment

|  | G01B 19/82 |
· · | for measuring areas (integrators in general Fulltext... Hierarchy... Expanded...G06G)

|  | G01B 19/84 |
· · | for measuring roughness or irregularity or surfaces

|  | G01B 19/86 |
· | using wave or particle radiation not covered by Fulltext... Hierarchy... Expanded...G01B 19/34

|  | G01B 19/88 |
· · | for measuring thickness

|  | G01B 19/90 |
· · | for measuring contours or curvatures, e.g. determining profile

|  | G01B 19/92 |
· · | for measuring the deformation in a solid

|  | G01B 19/94 |
· | using sub-sonic, sonic, or ultra-sonic vibrations

|  | G01B 19/96 |
· · | for measuring thickness

|  | G01B 19/98 |
· · | for measuring the deformation in a solid, e.g. by vibrating string