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

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

Fasten the extended flange to tank walls.

These sights have a glass window.

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.

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.

Seal the glass on your level indicator.

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

The nylon body and window make these indicators shatter resistant.

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

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

Monitor hydraulic fluid or oil level in pressurized applications.

Monitor hydraulic fluid or oil level 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.

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.

The low-profile body fits in areas with limited clearance.

Often used in cooling, lubrication, and process systems.

A large tubular window provides an unobstructed view of liquid color, clarity, and movement from multiple angles.

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

Peer through the glass on these flow sights to see what’s happening in your high-vacuum line.

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