1.Great for measuring any fluid, liquid or gas that is compatible with Brass. 2.Seismic pressure gauge is mainly used in metallurgy, electric power, petroleum, chemical industry, light industry, machinery and other industrial sectors detection. 3.Instrument can measure gas and the average of liquid pressure pulsations, 4.To overcome the media strong pulse and environmental vibration to instrument damage, ensure the accuracy of the reading. Numbering:0-3500PSI,295 Structural principle: This instrument consists of pressure systems (including joints, spring tube, etc.), the transmission mechanism, indicating devices and enclosure components Product Name: Hydraulic Pressure Gauge Connection: Brass 1/4 NPT Male 55mm (22 inch) Face Accuracy: 2.5; 1.6 Environmental conditions: -40 - 70 Degree, relative humidity less than 90% temperature: not more than 0.4% / 10 Degree (temperature deviation from 20 5 Degree) Material:Stainless steel+copper colour:As shown Package Contents: 1 x Hydraulic Liquid Filled Pressure Gauge Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.