In the midst of cleaning things up...found this...
Mystery tool 1.JPG
With a stamp in the brass..
Mystery Tool, logo 1.JPG
U.S.A.A.F.
United States Army Air Force....and since it did not become USAF until 1949....
Problem was, no chuck key....needed a jacobs K0 sized key....looked all around, even the "real" hardware stores didn't have that small size...
Decided to try McMaster-Carr....they had the correct key! Set up the account on the computer, and tried to order...would not fill? Call their number, talked to Customer Service..
They decided to send me the key..as a Sample...NO CHARGE!....
Buster Brown dropped off a box yesterday...
Mystery Tool, chuck key 1.JPG
Inside the box was a baggie, inside the baggie was the key....
Mystery Tool, Chuck key size.JPG
And.....
Mystery Tool, it fits.JPG
It FITS!....
A big THANK YOU! to McMaster-Carr!....may keep the baggie, to store both items in the tool chest, so I don't lose the key...