|  | 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 (arrangements of such instruments for measuring particular objects Fulltext... Hierarchy... Expanded...G01B 5/00)

|  | 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 |
Arrangements characterised measuring mechanically the dimensions of objects (instruments of the kinds covered by group Fulltext... Hierarchy... Expanded...G01B 3/00 per se Fulltext... Hierarchy... Expanded...G01B 3/00)

|  | 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 (measuring electric or magnetic values obtained from measurement Fulltext... Hierarchy... Expanded...G01R)

|  | 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 (arrangements of such instruments for measuring particular objects Fulltext... Hierarchy... Expanded...G01B 11/00)

|  | G01B 9/02 |
· | Interferometers

|  | 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 (instruments of the types covered by group Fulltext... Hierarchy... Expanded...G01B 9/00, per se Fulltext... Hierarchy... Expanded...G01B 9/00)

|  | 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 maesuring 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 of 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 of 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, e.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 of 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