FIELD: measurement technology. SUBSTANCE: device having case, measuring head, and compressed-air feeding unit joined with the latter, chamber for mounting part under measurement, and indicating instrument communicating with compressed- air feeding unit is provided with measuring head microfeed mechanism; measuring head is essentially cylindrical go plug gage with axial and radial channels and taper tip; chamber is essentially bush embracing plug gage accommodating flexible members for radial clamping of part to plug gage; it is mounted on case for removal. EFFECT: improved measurement accuracy. 3 dwg
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