Monitor hydraulic fluid or oil level in pressurized applications.

The nylon body and window make these indicators shatter resistant.

These indicators mount from the outside of your tank.

The nylon body and window make these indicators shatter resistant.

Shut-off valves stop flow so you can clean and replace gauge glass without removing these indicators from your equipment.

Replace existing gauge glass or combine with valves and guard rods to build your own level indicator.

Detect sludge in your container; an alarm sounds when the indicator comes into contact with sludge.

Monitor liquid level in applications that have vibration, high pressures, and high temperatures. These indicators are also known as armored level gauges.

For precise measurement of water, hydraulic fluid, or diesel fuel level, this gauge provides level readings down to 1/8".

Install these gauges through the top of your tank to monitor diesel, fuel oil, or gasoline level.

Measure liquid level with sound waves—these transmitters don’t come into contact with the liquid so you don't have to worry about fluid compatibility or contamination.

These sights have a glass window.

Easily view liquid movement and level changes from a distance—these sights have an indicator ball inside the glass window.

View tank contents from multiple angles through the plastic domed window.

With a thick glass window fused to a metal body, these sights resist cracking at high pressures.

Monitor food, brewery, chemical, pharmaceutical, and biotech processing lines with these sights that attach to quick-clamp fittings for fast installation and easy removal for cleaning.

Mount these sights from the inside of your tank and secure with a lock nut.

Press these sights into a hole in your tank wall; no additional mounting nuts are needed. They mount from the outside.

Built to resist corrosion and last in harsh environments, these vertical rulers are iron with a porcelain-enamel finish. Mount them to walls and tanks.

Fold these vertical rulers for convenient storage and transport.

Connect continuous segments to create a ruler up to 10 ft. long.

Use this color-changing paste to determine water level in a tank.