I used this Trumax Graphoscreen exposure/vacuum unit to expose an emulsioned silkscreen so that I could print my new cat paisley design. The equipment is so old that I could not find any information about it on the internet. The vacuum part of the unit no longer works so the image (on acetate film) is held down by placing piles of books onto it. First we attached the acetate to the glass with tape. We exposed the screen for 10minutes.