check the pressures in the heating systems’ expansion pressure vessels. It’s the perfect size to use with plumbing. It has a precise gauge with BAR, kPa, and PSI measurements. To make it easier to locate the Schrader or tyre valve in dimly lit and difficult-to-reach expansion or pressure vessels, the gauge has an incorporated LED light. You may also use it to check the pressure in your car’s tyres. Maintaining the ideal tyre pressure not only makes your ride safer but also reduces fuel costs because properly inflated tyres use less fuel.