ADJUSTABLE PLUG GAUGE Russian patent published in 1999 - IPC

FIELD: instrumentation. SUBSTANCE: invention is intended for test of internal dimensions of cylindrical surfaces. Adjustable plug gauge has body, working members made in the form of sectors and mechanism of their displacement. Gauge is also fitted with disc having threaded holes with lockpins whose middle parts have thread. Ends of lockpins have cylindrical surfaces eccentrically displaced with reference to axis of lockpins on to which working members made from used separable multiface hard-alloy plates are put. Tab tacks are made in body to fix plates. EFFECT: increased wear resistance thanks to use of more wear-resistant material. 2 dwg