> On Apr 22, 2018, at 6:01 AM, Erik Levin via OldTools  wrote:
> 
> Don inquired:
> 
>> t seems like there should be a pivot point in there somewhere, but I can't
see one.
> 
> There is a small spot on the straight-ish (left side) part, about half way
along the length.I strongly suspect that there is a steel (or brass) pin-- maybe
a nail-- through there a a pivot, with a metal tongue inside.
> 
> 
> As to purpose, I agree that is is for attaching to a round rod and holding
something else. Not likely a lab clamp, unless for real specialty like
explosives. Too many common chemicals turn wood to waste quickly. Maybe a clamp
for stretching skins?

Quilters & cros stitchers have a variety of clamps… but a Google of     quilt
clamp imaies diid not show one o these.

Bill