Anyone recognize these fixtures

[tfleming]

I just attended a machine shop auction, and bought these "work holding" fixtures. No one wanted them, and I don't recognize what they go to, but I definitely have use for them. There is no name on them, but they are well made. All are keyed, and the "wedge" locking pin looks like it is cut for locking in a dovetail.

Anyone know what these are?

 

[4GSR]

They belong to a optical comparator. Other than the vee block fixture, I'm not for sure what the other two would be used for other than holding your sample up off the table of the comparator for viewing.

 

[tfleming]

Thanks, Ken. If anyone can use these, I am up for a bit of "pigs for chickens" trading.....................