... absolute pressure measuring instrument with 8 units(Pa, hPa, mbar, mmH2O, mmHg,inHG, inH2O,psi). 1 ... absolute pressure measuring instrument with 8 units(Pa, hPa, mbar, mmH2O, mmHg,inHG, inH2O, psi).It ... 6 digits LCD DisplayParameters(absolute/barometric):Pa, hPa, mbar, mmH2O, mmHg,inHG, inH2O, psiResolution: ... 0.1 hPa, 0.1 inH2ORange: 300...1,200 hPa, 120.4...481.8inH2OAccuracy: ±3 ...