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.
- Range ± 55" H2O
- Dual Input
- Resolution to 0.01" H2O
- ?" ID Hoses, fitting and case included
- Backlit LCD
- Left port - negative pressure
- Right port - positive pressure