Hand-held and battery operated, PM Series pressure manometers monitor vacuum and pressure in non-corrosive gases. An integral transducer and digital display allow easy and accurate pressure readings. Three versions measure pressures in the range of ±1 PSI, ±15 PSI or ±100 PSI. A range switch allows measurement in units of PSI or kPa for the 100 PSI version, and PSI or mmHg for the 15 psi version. Pressure can be read on the built-in LCD display or relayed to a chart recorder, oscilloscope, or computer.