View tank contents from multiple angles through the plastic domed window.

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

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

With a thick glass window fused to a metal body, these sights resist cracking at high pressures.

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.

Weld these sights to single-wall tanks.

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