Tank Gauge Float 1.1/2" Male 6ft (1.8m) - FG6E For diesel, heating oil, lube oils or water, antifreeze and biodiesel up to B100. • Gauge provides a simple, rough indication of tank contents • Shows EMPTY 1/4, 1/2, 3/4 or FULL • Mounts directly into the top of tank • Accuracy +/- 5%