FIELD: engineering of pneumatic measuring equipment, possible use for measuring non-straightness of apertures with lesser diameters.
SUBSTANCE: device consists of pneumatic measuring device, in form of differential manometer-like device, having two measuring chambers, and sensitive element in form of pneumatic plug. Pneumatic measuring plug is provided with two systems of measuring nozzles positioned oppositely in one axial plane. Each system of measuring nozzles is connected to appropriate measuring chamber of differential device and consists of at least three interconnected measuring nozzles. Two nozzles are positioned on one generatrix of cylinder-shaped surface of measuring plug at certain distance from central portion symmetrically to each other, and the rest - on diametrically opposite generatrix in its central portion.
EFFECT: increased sensitivity and precision of measurement.
4 cl, 1 dwg
