Work 1 is measured on the basis of the dependence between the pressure in the measuring chamber and the clearance between the metering orifice of the gauge and the work. Pressure gauge 2 indicates the air pressure in the measuring chamber. The working pressure in the instrument is equalized by means of receiver 3 which is connected to the pressure reducer (regulator). Adjustable flow-control valve 4 enables the range of measurement of the instrument to be varied.
$3732$SHP,M$