Things that make you smile :)

I don't know. That's a pretty old vernier

I don't remember not having it, so it has to be from my gearhead days in HS, and I don't remember buying it....maybe my Dad's?
no manufacturer marks tho -

The slide rule is 50-60 years old. I was taking drafting/mechanical drawing, and it was gifted to me by an uncle along with an old drafting set.
Sent the drafting set to the next cousin - kept the slide rule cause TI-30
 
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