FIELD: measurement technology. SUBSTANCE: gear testing thickness of moving sheet material has housing 2 which carries beam 10 and intermediate spring-loaded lever 12 with L-shaped boss 13 under which free end of beam 10 is entered. Gear includes two rollers 15, 16 intended for contact with moving sheet material. Roller 15 is anchored on intermediate lever 12, roller 16 is put on housing 2 so that axes of rollers are parallel and their rotation planes coincide. Gear is equipped with support 1 on which housing 2 hinged to support 1 by means of springy member 5, for example, spring and two links 3, 4 of equal length is mounted. Distances between hinges 6, 7 of housing 2 and 8, 9 of support 1 are same and they form variable parallel link mechanism together with links 3, 4. EFFECT: enhanced measurement accuracy and operational reliability. 1 dwg
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