For use with water, hydraulic fluid, and diesel, install these gauges through the top of your tank.

Mount these gauges on the flat end of a horizontal, cylindrical tank to monitor diesel fuel, fuel oil, or gasoline level.

Monitor hydraulic fluid or oil level in gear boxes, crank cases, and other reservoirs.

These flexible indicators bend to follow the contours of a tank.

Combine a pair of valves with a gauge glass and four guard rods to build a complete level indicator.

Mount these indicators from the inside of your tank through unthreaded holes.

Simultaneously monitor hydraulic fluid or oil level and temperature in gear boxes, crank cases, and other reservoirs.

Use this gauge glass with heavy duty level indicators.

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

Seal the glass on your level indicator.

Also known as level loggers, level sensors, and pressure transducers, these transmitters sit at the bottom of your tank in applications that make traditional mounting difficult.

The window and body are made from a single piece of plastic, making these sights more shatter resistant than sights with a glass window.

Machined from one piece of stain- and impact-resistant plastic.

Continuously monitor oil quality through the clear plastic reservoir, and use the attached drain valve to remove water accumulation.

Often used in kilns and other heating equipment, these sights have a quartz window that can withstand temperatures up to 1600° F. They're also known as peep sights.

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.

Weld these sights to single-wall tanks.

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.

Paste changes color when it’s submerged to indicate the gasoline level in a tank.

Also known as oil-gauging tapes, use these tape measures to check the level of oil and other fluids in deep, large containers such as tanks and vats.