Criterion S- 1 1/2 Boring Head Thread Offset Manual Adapter Holder Tool 5/8" DIA straight shank. This is one of the smallest heads in the Criterion line featuring a 7/8-20 threaded back. The square design permits an extremely large offset while maintaining a more than adequate bearing surface.
L S STARRETT No. 231-F Machinists Micrometer Thickness Gauge #721-C Inside Caliper ,Dial Gauge RPM Pat. Date April 1897 Brown& Sharpe Rules And Thickness Gauge # 648 Parts And Repair Other Tools Are Unmarked Note One Thread Is Bent On Clamp Both Vials Are Present On Square And Circle Gauge Please Use Photos As Part Of Condition And Description NO INTERNATIONAL SHIPPING Payment PayPal Shipping USPS
This is a prototype that was made for the micrometer stops i used to sell. This one has sat around the shop and the paint/etc is pretty beat up as seen. See photos for details.
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