Check the listing for details. Handheld Manometer Dual Differential Digital Gas Pressure Tester with Backlight. Condition: New. Listed at 64.90 USD. What is Manometer? A gas pressure tester is an instrument which is widely used for many industrial applications, this device can be used to measure the pressure difference between two points in a pipe or it can also be used to determine the pressure difference between two pipes. A manometer can be used to measure Positive pressures and Negative pressure, it is also capable to measure differential pressure. FEATURES: Wide screen with Temperature and Pressure value display with backlight function High Precision , High Range and High Resolution Data HOLD / STORAGE / SEARCH function MAX / MIN Data Mode Dual channel and can simultaneously detect differential pressure between two detection ports (P1-P2) Measuring Positive and Negative Pressure Digital differential pressure gauge can also be used for temperature measurement Switchable temperatue unit (°C/°F) Low Battery Indicator APPLICATION: This pressure gauge is widely used in natural gas pipelines, air-conditioning refrigeration and ventilation systems, mechanical hydraulics, plastic molding, ceramic products, biopharmaceutical molding, mining area pressure detection, petrochemical refining, gas, liquid, and production industrial equipment pressure detection.