And Weavers to monitor filters.

A secondary use for monitor filters is privacy as they decrease the viewing angle of a monitor, preventing it from being viewed from the side; in this case, they are also called privacy screens.

Particle counters are used here to measure contamination of hydraulic oil, and therefore allow the user to maintain their hydraulic system, reduce breakdowns, schedule maintenance during no or slow work periods, monitor filter performance etc.

A monitor filter is an accessory to the computer display to filter out the light reflected from the smooth glass surface of a CRT or flat screen display as well as the radiation emitted from CRT and LCD displays.