FIELD: measurement technology. SUBSTANCE: proposed device is designed for measuring deviation of position of key ways relative to axis of through holes. Device has housing 1, alignment pins 2, 3, indication unit 5 installed on slider 4. article 9 to be checked in located in housing 1 by fitting its hole onto alignment pins 2 and 3 providing contact of measuring tip 6 of indication unit 5 with side surface 7 of key way under checking. Measuring tip 6 is made L-shaped. EFFECT: improved accuracy of checking. 2 dwg
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