Starrett no 127 the prettiest and rarest micrometer

I think that series was made for US Armories, but would have to consult old catalogs to confirm.
 
of course we all appreciate that the screw slots are perfectly aligned with the arc of the frame, right?

-frank
Funny, I was just thinking of this the other day. They call it "clocking" the screws, though it usually refers to turning the screws so the slots are all aligned.
 
Unless Jeff has the links, and wants to bring it back, it's buried in the past. :)
 
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