The HD700 Differential Pressure Manometer is capable of measuring low range/high resolution gauge or differential pressure from 0 to 55.40 inches of water. The heavy duty, easy-to-use manometer is ideal for HVAC, fume hood, pneumatic controls, hydraulics, medical equipment, and clean room applications. Extech’s HD700 Differential Pressure Manometer features 11 selectable units (inH2O, psi, mbar, kPA, inHg, mmHg, ozin2, ftH2O, cmH2O, kgcm2, bar) with max/min recording and a relative time stamp. It has a range of functions that includes data hold, auto power off, min/max functions, and a zero function for offset correction or measurement. The HD700 has a large, easy-to-read LCD display with backlighting and a built-in USB port. Comes complete with 9V battery, two connection hoses, Windows® compatible software with USB cable, built-in stand and ABS carrying case.