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Inventory no. 42112 - Former Display Label

Anglo-Indian WAYWISER (Everest pattern)
1833

Signed: "Differential Perambulator / Designed by Major Everest / Executed by Seid Mohsin / Masuri 15th October 1833".

Also inscribed: "Fore wheel shows thousandths / Back wheel miles and tenths".

Brass, khaki lacquered; iron. Diameter of case 100mm.

The teeth of both wheels engage in a worm gear which is attached to the driving shaft. The instrument was used in the Indian survey.

Shown alongside is a photograph of an ink and pencil drawing of Colonel Sir George Everest (1790-1866), Surveyor-general of India, made in July 1843 (Original in National Portrait Gallery). Mount Everest is named after him.

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