SUPCO 10 in. H Digital Manometer with Dual Input,

Isolate difficult pressure problems in natural gas and propane systems. Providing a differential measurement, the DDM55 accurately tests for leaks in low pressure gas systems and more. Left port is for negative pressure and the right port for positive pressure.|Range 55 in. H2O|Dual input|Resolution to 0.01 in. H2O|ID hoses, fitting and case included|Backlit LCD|Left port - negative pressure|Right port - positive pressure