AIR-OPERATED MEASURING DEVICE Russian patent published in 1994 - IPC

FIELD: measuring engineering. SUBSTANCE: device has case with basing members, suspension mounted on spring parallelogram, two bellows positioned in the case oppositely, two pairs of nozzles received in corresponding basing members and connected with the bellows, and indicator. Adjacent faces of the bellows are rigidly secured to the case and the other faces are coupled with the suspension. Grooves for movements of the nozzle parallel to axes of the bellows are provided in the basing members. The nozzles are rigidly secured to the suspension and coupled with the bellows in pair so that outlets of the nozzles are oriented oppositely to direction of movements of the face of the corresponding bellows in each pair. EFFECT: enhanced accuracy of measuring and simplified structure. 1 dwg