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G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
G01B3/00—Measuring instruments characterised by the use of mechanical techniques
G01B3/46—Plug gauges for internal dimensions with engaging surfaces which are at a fixed distance, although they may be preadjustable
G01B3/48—Plug gauges for internal dimensions with engaging surfaces which are at a fixed distance, although they may be preadjustable for internal screw-threads
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General Physics & Mathematics
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Length-Measuring Instruments Using Mechanical Means
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Verbindung der Schlossnuss mit zwei dieselbe durchgreifenden, sich in der Laengsrichtung zu einem Drueckerdorn ergaenzenden Dornhaelften, auf deren Enden die Druecker aufgeschoben werden