The art of repivoting watch wheels and pinions. How to make two new lathe attachments for making micro-drills, small cylindrical components, and the like /
Porter, Robert D. ,
The art of repivoting watch wheels and pinions. How to make two new lathe attachments for making micro-drills, small cylindrical components, and the like / by Robert D. Porter. - 20 pages : illustrations ; 21 cm
Clock and watch making--Equipment and supplies.
Gearing.
Mechanical movements.
Lathes.
Machine Not Geographic The Author Porter, Robert Timekeeper (general)
The art of repivoting watch wheels and pinions. How to make two new lathe attachments for making micro-drills, small cylindrical components, and the like / by Robert D. Porter. - 20 pages : illustrations ; 21 cm
Clock and watch making--Equipment and supplies.
Gearing.
Mechanical movements.
Lathes.
Machine Not Geographic The Author Porter, Robert Timekeeper (general)