PNEUMATIC MEASURING DEVICE Russian patent published in 1995 - IPC

FIELD: measuring equipment. SUBSTANCE: in pneumatic measuring device, having a case with base members, two suspensions installed in the case on two spring parallel link mechanisms, two pairs of bellows positioned in the case opposite each other, the near ends of the bellows in each pair are rigidly coupled to the case, and their other ends are coupled to the suspension, two pairs of nozzles located in the respective base members and connected to the respective bellows, and an indicator, whose inlets are connected to the respective suspensions, in the base members provision is made for grooves for movement of nozzles in parallel with the axis of the bellows. The nozzles are rigidly secured on the respective suspension and connected to the bellows in such a manner that the nozzle outlets are directed opposite the direction of movement of the end of the respective bellows. EFFECT: enhanced accuracy due to elimination of basic error and expansion of measurement range. 1 dwg