this is an absolute pressure measuring instrument with 8 units(Pa, hPa, mbar, mmH2O, mmHg,inHG, ... Meter(8070)Absolute Pressure Meter(8070) is an absolute pressure measuring instrument with 8 units(Pa, hPa, mbar, mmH2O, mmHg,inHG ... quality products, you can find it is the most economic instruments for pressure meter.2.Specification:Display: 6 digits LCD DisplayParameters ...