Very cool useful tool that's hard to find.

Vintage E Keind T & M Co. 6 point hex uni key

One side reads set screw, the other side reads gap screw.

Sizes are:

1/4.

5/16.

5/8.

No. 8.

No. 10.

7/16.

These are taken from the set screw side.

Gap sizes are similar except where No. 8 is, is No. 4. Also where No. 10 is, I can't make out the other side.

Very well made piece that won't take up much room. 

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