The Oil Tank Sight Gauge is a traditional, cost-effective pull to read oil tank level indicator that gives an instant measurement of the tank’s contents. It benefits from an integrated paper filter with alloy bowl for easy removing and cleaning. This oil tank level gauge has an incorporated isolation valve to that it can be serviced or replaced without having the drain the entire tank of fuel. Designed to fit the bottom outlet of both steel and plastic tanks, and complete with a multi-directional outlet so that it can feed up to two boilers, the fuel tank gauge is suitable for a range of applications.