OM,
First, you have a Clausing 4800 Series lathe. Atlas Press Co. bought Clausing in 1949/50. In the early 50's, they changed all of the Clausing model numbers and as I understand it, the Clausing 100 MK3 became the Atlas 4800. Later in the decade, they changed the name on the nameplates of the former Clausing machines back to Clausing, but kept the new model numbers. So your post really belongs over in the Clausing/Colchester Forum. Normally, I would just move it. But a week ago yesterday something wierd happened to my WA5CAB user ID. I can still log in but it takes the browser anywhere from 2 to 4 minutes per try and only about 2 out of 5 tries don't end with a blank white screen. That wouldn't be so bad but once I get logged in, the next thing I click has the same probability of working. And the next, and so on. It took about three hours with two computers and four different browsers last Monday to make two posts.
In any case, from your description of the controls, I think that the manual that you need is in DOWNLOADS. You don't have enough posts yet to have access to DOWNLOADS. However, you are showing the SUPPORTER bar which unless someone has been monkeying with DOWNLOADS since I became unable to, should suffice. If you can see DOWNLOADS in the main tool bar, click on it. Click on where it says in part List of Categories (Click Here.... That should bring up a drop-down list of folders. Scroll down and click on Machine Manuals...Then scroll down again and click on Clausing/Colchester. The manual I think you need should be at the top of the list.