Part of circular instrument dividing engine.
"Four foot" circular dividing engine (c. 1778) by John Troughton, diameter of wheel to edge of teeth is 46 1/4 inches, with 2160 teeth, wooden treadle missing, and also a few unimportant details such as milled-head screws, near the 210 degree mark seven teeth are partly burred
- Object Number:
- 1932-22 Pt1
- type:
- circular dividing engine and component - object