Thanks heaps guys. I’m fairly certain it’s a 27mm scope because I’ve measured with a vernier caliper but either way it needs to fit into a scope ring. They were meant to fit into a claw mount and I want the convenience. So I’ll go with the delrin inserts for a 30mm to 26mm for now. I’ve 30mm scopes so if it don’t fit nicely, I can transfer the rings to another scope.
I’ve several of these vintage German scopes that need fitting so figured I’ll start with one. Very nice glass for a 1920 scope.
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