Hti LCD Mini Digital Manometer Differential Gauge Air Pressure Meter ±2Psi Data Hold 11 Units

features 11 selectable units of measure: inH2O, psi, bar, mbar, Kpa, InHg, mmHg, ozin2, FtH2O, cmH2O, kgcm2. It's used for testing ventilation and air conditioning system, spot check, clean room, or any gas pressure system troubleshooting.
Features:
Wide Measurement Range: 0.5s response time, 13.79 kPa / 2 psi / 55.4 H2O measuring ranges with high accuracy.
11 Selectable Units for Measurement: including InH2O, Psi, Mbar, kPa, inHg, mmHg, Ozin2, ftH2O, cmH2O, Kgcm2, and Bar, convenient for use.
Clear Digital Display: large LCD backlight display, providing clear reading.
Data Hold: for easy checking the data and writing it down.
User-friendly Indicator: low battery indicator, pressure unit indicator, and Error codes for out of range indication.
Other Functions: Max./Min./Avg values, and with a relative time clock, automatically shutdown, zero adjustment, offset and DIF function