Measuring instruments characterised by the use of mechanical techniques

Child Classifications

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• G01B 3/002
• G01B 3/02 Rulers with scales or marks for direct reading (measuring tapes G01B3/10)
• G01B 3/10 Measuring tapes
• 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 measuring contours or curvatures G01B5/20)
• 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 3/34 Ring or other apertured gauges, e.g. "go/no-go" gauge
• 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 3/46 Plug gauges for internal dimensions with engaging surfaces which are at a fixed distance, although they may be preadjustable
• G01B 3/56 Gauges for measuring angles or tapers, e.g. conical calipers