Originally Posted by
woodcraft
The firm pads rotate- no bearings, & the spring-loaded lever changes the space between the pads from ~2.5mm to 4.5mm.
The whole thing is heavy, over 2 lbs.
I did a quick search of the company name and as you probably already know, they dealt with photographic equipment and supplies. Since the company was established in 1900's ish…. My guess that has something to do with processing or holding film.