Circular instrument dividing engine.
- maker:
- James Allan
Circular dividing engine made by James Allan, London, England in 1809. The cast brass, 30-inch dividing plate, with a split outer rim of two rings has 1440 teeth is supported on cast brass frame. The wooden tripod stand, treadle, and frame for carrying cutting mechanism are missing.
A dividing engine is used to finely graduate the scales on scientific instruments. In 1810 James Allan was awarded the gold medal of the Society for the Encouragement of Arts Manufacturers and Commerce (now the Royal Society of Arts) for this dviding engine.
Details
- Category:
- Industrial Metrology
- Object Number:
- 1932-23
- Measurements:
-
overall (main part): 840 mm x 850 mm x 280 mm,
- type:
- circular dividing engine
- credit:
- Bennett, A.J. and Co.
