Made from tough plastic, used both for testing pipework installations with air for leaks before the introduction of gas and for checking and setting correct gas pressures on domestic and commercial appliances. Marked in millibars the scale adjusts to zero the water level. Extruded cover slides off and may be clipped over the base for standing the tool vertically during use. Hanging tab permits vertical hanging from suitable protrusion.
Capacity:
- 0257N 30 millibar;
- 0258F 60 millibar.