Square American DWYER pressure meter: For measuring positive and negative pressure; for the pharmaceutical, electronics factory clean room of the net differential pressure measurement, HVAC filter pressure testing, etc. Overall: rectangular plastic housing, compact solid range :. 0-80mmw.c, 10-0-700Pa other dozens of range specifications Maximum overpressure: 100KPa Maximum operating temperature: 54 ° C Accuracy: ± 3% FSO Size: 188.12X150.02X28.58mm domestic pressure meter square : MP-700 series diesel oil pressure gauge Material: ABS Knob: PC Seals: NBR Working temperature: -40 ~ 60 ℃ Maximum pressure: 200KPa (2bar) filling: oil, density 0.786kg / dm3 (15 ℃) Security: This differential pressure gauge has a special structure, to avoid over-pressure liquid overflow installation position: vertical