I set up a strap type wrench using my leather belt and a spanner (much longer than in the photo).similar to some universal oil filter wrenches. Once I got these back home, I just couldn't budge either objective. Initially, the view was almost completely obscured by internal coatings of filth, but more importantly for me - the collimation was absolutely perfect, and the apparent fov was massive. I have never experienced such tightly torqued eye pieces or objectives, set into place no doubt over many many decades.I had no idea how old these things are. I picked these up on Saturday morning at a junk shop and then spent the entire weekend disassembling them, cleaning and rebuilding.
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