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

An extended flange makes these sights easy to bolt onto tank walls.

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.

Designed with quick-clamp (KF) connections, these sights connect to a port on a high-vacuum chamber, so you can monitor what's happening inside.

Monitor hydraulic fluid or oil level in pressurized applications, such as hydraulic systems where overflow is a concern.

Made with clear, shatter-resistant plastic, these indicators don't require a shield to protect them like other oil-level indicators, so you can check your hydraulic fluid or oil level from any angle.

Check the level of liquids containing chemicals such as alcohol-based solvents, boric acid, and sodium bicarbonate.

Simultaneously monitor the 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.

Avoid overfilling—these indicators pop up when your tank is almost full.

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

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

Often used in cooling, lubrication, and process systems.

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

Rated for more than double the pressure of standard flow sights, these can withstand pressures up to 400 psi.