RPS-190 is a holder for larger transparencies, like some types of aerial film,  Duratrans (also known as backlit film) and röntgen images. It comes with a dedicated bracket to attach it to the base board and over the light source  of Cambo RPS Copy Stands. The bracket has a nifty tensioning system to make mounting to the table easy and secure. When not in use it can be stored  within minutes.

The base plate is anti-newton glass, the upper glass plate is ultra clear. The latter can easily be taken out of the assembly in case it's not desirable to use cover glass.