Criterion Model 3 hotsell 3 Inch Square Boring Head 3/4 Straight Shank Good Condition Free USA Shipping

Here is a really nice big Criterion Model 3 boring head. I don't have a machine to test it on hotsell or a boring bar to fit it, but it appears to be in good working condition, and it moves through the full range. I cleaned it up to remove the hardened grease and some light surface rust on one side and the 3/4 inch shank. The hole for the boring bar is 3/4 inch with a 1/2 inch bushing. I do not know the age except to say that it is marked Criterion MFG Costa Mesa; Criterion moved from Beverly Hill to Costa Mesa in 1953 so it is no older than 1953. I will ship this free to US addresses via USPS priority mail