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.

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.

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

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.

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.

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.

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

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.

Add a window to your high-vacuum system. With a pane of glass sealed inside a high-vacuum CF flange, these sights bolt onto vacuum chambers, tee fittings, and manifolds.

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

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

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.

For visual confirmation of flow from a distance, these sights have a ball indicator that moves when flow is present.

The indicator moves when flow is present, so it’s easy to visually confirm flow from a distance.

A ball indicator increases the visibility of flow for checking at a distance.

Withstand twice the temperature of standard sights. These are rated for temperatures up to 400° F.

Barbed fittings slide into soft plastic and rubber tubing.

About half the height of other flow sights for chemicals, these fit in areas with limited clearance.

Made of FDA-listed materials, these sights can be used with food and beverage. They have sanitary quick-clamp connections for easy disassembly and cleaning.