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

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Measuring instruments characterised by the use of mechanical techniques > 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

Child Classifications

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• G01B 3/40 for external screw-threads
• G01B 3/42 of limit-gauge type, i.e. "go/no-go" (G01B3/40 takes precedence)