Improved Patent Portable Theodolite

Made:
1818-1826 in Strand
maker:
Charles Augustus Schmalcalder

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Telescopic prismatic compass by C. A. Schmalcalder, 82 Strand, London, England, 1810-1826. This telescopic prismatic
Science Museum Group Collection
© The Board of Trustees of the Science Museum

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

Improved Patent Portable Theodolite, consisting of prismatic compass, telescopic sight and level by C. A. Schmalcalder, 82 Strand, London, England, 1818-1826.

Charles Schmalcalder designed this theodolite to be lightweight and versatile, appropriate for rapid military or expeditionary surveys. It incorporates a prismatic compass, which Schmalcalder had patented in 1812. The instrument also features a telescopic sight and spirit bubble.

Details

Category:
Surveying
Object Number:
1911-180
Materials:
brass (copper, zinc alloy), glass, spirit and steel (metal)
type:
theodolite
taxonomy:
  • furnishing and equipment
  • measuring device - instrument
  • furnishing and equipment
  • measuring device - instrument
  • magnetic compass
credit:
Court, Thomas Henry

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