Northfield Precision Instrument Corp. introduces its Model NF-800 standard sliding jaw chuck. As seen in the photo, this particular top tooling was custom designed and manufactured for a customer.

The top tooling included a set of hardened and ground subjaws and two sets of inserts. The subjaws were designed to accept these inserts, making the chuck capable of holding multiple parts and allowing for a quick change-over from one part to the next. The subjaws were ground in place to allow for increased accuracy and repeatability (better than 0.0001" T.I.R.).