Shanghai QualityWell Industrial Co., Ltd PRESSURE GAUGE GAS TEST KIT Use for accurate pressure reading to check and/or set manifold pressure to furnaces and gas appliances that use natural or L.P. gas. Low pressure gauge built into the protective case for easy in use. Re-zero with external recalibration screw easier to adjust. The plastic blow molded case for added durability. STANDARD FEATURES Measuring element: Case: Lens: Nominal Size: Dial: Pointer: Connection: Accuracy: Hose Tube: Range: Brass diaphragm sensitive Black Steel PC 2.5”(63mm) aluminum, flat, black lettering aluminum, black Brass hose barb(1/4”) +/-3-2-3% Rubber ,3 feet. 15”H2O/OZ/in2 , 0-35”H2O/OZ/in2, others are available