Well, I thank all of you who answered, indeed it is a lensmeter, when on the right track I found all about it, and, sadly it wont do for what I thought I
It takes screw in phase plates and has a 40x fitted. There are 6 positions marked A to D and O. There is a hex key adjustment and centring screws. The centring
I had the same sort of problem on a nikon s compound trinocular when it was fitted with a 1.2x objective. It was nothing to do with the scope. It was my eyes.
Hi, it looks like a standalone version of the goniometer head fitted to many measuring or toolmakers microscopes. There should be some way of rotating the