Simple theodolite, Italian, 1676

Made:
1676 in Modena
maker:
Johannes Macarius

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Simple theodolite by Johannes Macarius of Modena, Italy, 1676

Made by the architect Joannes Macarius of Modena, Italy, with the inscription 'Ioannes/Macarius/Mirandolanus/Fecit Anno 1676' engraved on the alidade. Circumferentors (with a complete circle scale) and graphometers (with a half circle scale) were widely used throughout the 17th and 18th centuries to compare angles, so that the user could work out how far away a distant object was. A joint on the support allowed for both vertical and horizontal use.

Details

Category:
Surveying
Object Number:
1880-195
Materials:
brass, complete, glass, iron
Measurements:
Overall theodolite: 370 mm x 360 mm x 100 mm, 2.7 kg
Additional alidade: 306 mm x 170 mm x 15 mm,
type:
simple theodolite
taxonomy:
  • furnishing and equipment
  • measuring device - instrument
credit:
Fulgence, Mons. (Paris)

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