Animal feeder sight glass device

Apparatus for detecting oil level in oil tank of small-sized mar

Armored tubular sight gauge with integral valves and...

Auto-cleaning oil-gauge for axle-ends of vehicles

Automatic oil level maintaining system

Column-type level indicator for tanks and the like, comprising m

Container having sight glass

Container of coolant

Cooler and level indicator for beer kegs

Device for detecting the liquid level in a tank, particularly a

Device for indicating level of liquid contents remaining in tank

Device for indicating the quantity of a liquid in a reservoir an

Dryer with an air flow testing device

Filling level indicator having an explosion-proof housing

Flat glass sight gauge

Fluid level detection apparatus

Fluid level indicating device for any container

Fluid level verification apparatus

Fluid level verification apparatus

Gaskets for liquid level gages