Graphometer-clinometer by Phillippe Danfrie
- maker:
- Philippe Danfrie
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© The Board of Trustees of the Science Museum
Graphometer-clinometer by Phillippe Danfrie, France, c.1600
Circumferentors (with a full circle scale) and graphometers (with a half circle scale) such as this example made by Philippe Danfrie, were widely used in the 17th and 18th centuries for angle measurement. A joint on the support allowed for both vertical and horizontal use. Philippe Danfrie is credited with the original design of the graphometer, publishing a book on the subject in the 1590s.
Details
- Category:
- Surveying
- Collection:
- Sir Henry Wellcome's Museum Collection
- Object Number:
- 1980-1628
- Materials:
- brass (copper, zinc alloy), glass, steel (metal), paper (fibre product), gilding and paint
- Measurements:
-
overall: 115 mm x 283 mm x 102 mm, .57kg
- type:
- graphometer and clinometer
- credit:
- On loan from the Wellcome Trust
