This image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
Licensecircumferentor (ipodimeter') with eccentric alidade, Italian
Science Museum Group
© The Board of Trustees of the Science Museum
circumferentor ("ipodimeter") with eccentric alidade, Italian, 17th century
The inner scale on the circle of this circumferentor is engraved; 'Aqvilo solanvs evrvs avster africvs favonivs chavrvs septent'. Circumferentors (with a full circle scale) and graphometers (with a half circle scale) were widely used through the 17th and 18th centuries for angle measurement. A joint on the support allowed for both vertical and horizontal use. The sights on this instrument are set off to one side.
Details
- Category:
- Surveying
- Object Number:
- 1908-122
- Materials:
- brass, iron, needle and glass
- type:
- circumferentor
- credit:
- Middleton, E.C.
