This cast iron
HORIZONTAL DRUM FILL GAUGE Horizontal Drum Cast Iron Fill Gauge allows you to easily check liquid level of a horizontal drum at a glance - no more surprise re-orders or stock depletions. Use indoors or out, wherever you need to monitor the liquid level of drum contents. Sight gauge shows how much liquid remains in a 30- or 55-gallon drum.
Drum gauge installs easily by threading into a standard .75" NPT bung hole and accepts any .75" faucet.
Rugged zinc plated, cast iron body stands up to heavy use. Heavy gauge glass tubing is protected with a chrome plated housing and permits use with non-viscous oils. Buna-N seals make this unit ideal for petroleum products.
Item J112-086 includes a self-closing faucet.