Watchmaker's turn

Made:
Unknown
maker:
Unknown

Watchmaker's drilling turn. The turn has a lug at its base for fitting it into the jaws of a vice. One end of the fork is drilled and tapped to recieve the adjustable back centre and the other end has a plain hole through it. The spindle has a shouldered fore end fitting the hole, whilst the back centre holds the shoulder up against the bearing. The nose of the spindle is bored for the drills. It carries a pulley at the near end for the bow string to act upon.

A turn like this was used to hold small watch parts in place. This turn was used with a whalebone bow (1910-16/2) which rotated the part in the turn in order to shape it.

Details

Category:
Hand and Machine Tools
Object Number:
1910-16/1
Materials:
brass, brass DUP 1 and steel
Measurements:
turn: .5906 x 1.6535 x .3937 in.; 15 x 42 x 10 mm
Drill turn overall: 45 mm x 96 mm x 14 mm, .072 kg
type:
hand tools
taxonomy:
  • tools and equipment
  • equipment
  • drills
  • tools and equipment
  • equipment
credit:
Wimshurst, H C