What are these ?

[charlie n]

Found these in a box of auction treasure.

 

[JMS/.MN]

Thumbscrews for a nasty tongue...

 

[Michael Soldan]

I think carpenters use them to clamp onto their squares to set up for cutting stair risers and runs..thts my guess

 

[charlie n]

I thought stair gauge too. The gap is about 5/16 and they have a edge haunch on the bottom.

 

[RwEny]

Not square gauges. They would have to be the same size on both sides of the square to work when you turned the square over.

 

[CGID]

I concur, but that's all I can do. The counter-sunk hole on top and lip on the bottom, indicate they were made to stay put on the edge of something.

 

[rustyfarmall]

They attach permanently to a work bench and then are used for holding the sickle bar from a sickle type hay mower, while the sections are sharpened. The sharpening stone is a "VEE" shaped stone, chucked into an electric drill.

 

[marloweg]

your right still have a set of 4 on the old work bench

 

[Stephen Newell]

To me they look like glass shelf brackets.

 

[charlie n]

Could be sickle clamps,but never have saw them used. Still got my Great Grand dads sharpener but the sickle clamps on it. Tried google but got nothin back. Defiantly not shelf brackets. Gonna make a welding gig out of 'em. Thanks for the input.

 

[John in Md.]

Don't know what they are called, but the awning guys used them to attach canvas awning frames on my windows.