This is an unknown part that has been in my shop for over 25 years. I have no idea what its for so hopefully someone has a use for it. This is made by Armstrong tool company in Chicago.
Tricks & Secrets of Old-Time Machinists: Hints and Kinks Provided by the Readers of American Machinist Magazine in 1915, originally published in American Machinist Magazine, compiled, edited and published by Lindsay Publications, 2009. 5 1/2 x 8 1/2 paperback, 96 pages. ISBN 1-55918-383-7.
LOT OF 5 - NEW THOMAS & BETTS (KINDORF)NC-105-2 NON-METALLIC 2" PIPE CLAMP WITH NON METALLIC NUTS & BOLTS I HAVE SEVERAL BOXES OF THESE AND CAN SELL YOU HOW EVER MANY YOU NEED FEEL FREE TO CONTACT ME WITH OFFERS....
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