... : Electric Contact Pressure Gauge measures the pressure and negative pressure of liquid, gas or vapor not corrosive to copper, steel and ... . Case Diameter: 60mm=2.5'',100mm=4'',150mm=6''. 4. Measurement range: From -0.1 to 70Mpa 5. Dial plate: Single ... . Ambient Temperature: -10~70°C 9. Application: For measurement of pressure including negative pressure of liquid, gas or vapor not corrosive to copper ...