Ключевые слова: air, apparatus, bar, barometer, closeup, control, controller, device, energy, engineering, equipment, factory, gage, gaging, gas, gauge, high, hydraulic, indicate, indication, indicator, industrial, industry, instrument, instrumentation, machine, manometer, measure, measurement, metal, meter, metering, needle, oil, pascal, pipe, piping, precision, pressure, psi, pump, reading, round, scale, spike, system, technical, technology, valve,