These sights have a glass window.

View tank contents from multiple angles through the plastic domed 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.

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

Check the contents of your tank from multiple angles with the domed window. To mount these sights, fasten their extend flange to tank walls.

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

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.

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.