The Dash Mounted Electric Fuel Gauge helps keep the fun going by providing a constant update of your fuel level at a glance. Designed for top mounting in aluminum, plastic, or stainless steel fuel tanks on all types of marine vessels. The fuel gauge allows you to see how much fuel is left in the tank in effort to plan refill stops. Ethanol compliant. Exceeds current NMMA and ABYC specifications. Calibrated to the Industry Standard of 33-240 Ohms. Complete with 5 hole gasket and screws.