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.

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

The nylon body and window make these indicators shatter resistant.

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

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