Jones and Shipman (Jones and Shipman-Braunstone) "Perfect Point" Twist Drill Grinding Machine. "Instructions For Operating" together with Technical Sales and Specification Sheets from several years explaining the principles of the machine and how both it and the attachments worked.

Braunstone (Jones and Shipman-Braunstone) "Perfect Point" Twist Drill Grinding Machine. "Instructions For Operating" together with Technical Sales and Specification Sheets from several years explaining the principles of the machine and how both it and the attachments worked.