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Help identify this odd adjustable clamp-like tool

JPRI

Aluminum
Joined
Feb 3, 2012
Location
RI USA
Found in a shoe box full of machinist tools, with a bunch of early ones (LS Starrett, DB&S, J.Stevens, etc). I need help on this one.
 

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I'm sure I've seen that - or something very like it,m before,..........but what it was has gone, (it's me age you know ;) ) .......I'm thinking some sort of winding tool, ???????????? possibly sewing, knitting, spinning or cloth making?
 
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I finally identified this thanks to a Martin J. Donnelly past auction email. It's a clamp for a combination safe lock to increase accuracy in turning.
 

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Thanks for the follow up! Now the funky part is that 10 years from now I'll see oe of these things somewhere and I'll say "That is a safe combination lock accuracy handle!" and everyone will think I'm a genius, instead of someone who was screwing around on the internet at midnight when he should be sleeping.
 
I finally identified this thanks to a Martin J. Donnelly past auction email. It's a clamp for a combination safe lock to increase accuracy in turning.

I'm filing that in my bin of useless tools I may construct and use for a different purpose at a later date.
Only reason I can think of for a device like that is applying force to a wheel pack that will probably shear the key and cause a really expensivce repair.
 








 
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