Graphometer-clinometer by Phillippe Danfrie

Graphometer-clinometer by Phillippe Danfrie, France, c.1600

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Graphometer-clinometer by Phillippe Danfrie, France, c.1600
Science Museum Group
© 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