round gauge or something else

[international3414]

i thought the 10,25 and 50 were thousands but they are too big,and the 3 odd holes?....any ideas

[geneg]

April 27, 1877 was a Friday
April 27, 1977 was a Wednesday

U.S. patent dates are Tuesdays   Possibly English or Canadian?

Spaces to count sheets of paper or cardstock?

CORRECTION   --thickness of material, cord, thread,  or fabric?  Patents describe improvements on a sewing machine, but abstract & drawings are not available.  CANADIAN

CA 7.392                            William W.  Whitcomb

Sewing Machine

April 27, 1877

*********************************************************

CA 7.393                                  Israel M.  Rose

Sewing Machine

April 27, 1877

[international3414]

thank you

[geneg]

I'd still like to know what it's for.
Apparently, Canadian patent info isn't as readily available as USPO.  Did you get anything else with it?

[international3414]

I've had it awhile,it was probably mixed in with a bunch of old keys??

[amecks]

Sorta resembles a bicycle spoke wrench. 

[international3414]

good idea,but no cigar