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Altazimuth Theodolite and Case, by Benjamin Cole, London, c. 1750

Inventory Number 38733

Acknowledgement: © History of Science Museum, University of Oxford, inv.38733

Subject
Surveying
Item type
Object
Provenance
Not ascertained
Primary inscriptions
"Cole Fecit" in compass box. Printed trade card in lid of case: "Made by Benjamin Cole / Mathematical Instrument Maker, at the / Orrery / Next the Globe Tavern in Fleet Street / LONDON."
Object type
Theodolite
Dimensions
Diameter: 200mm
Inventory No
38733

Description

Combined simple and altazimuth theodolite with detachable telescope and vertical arc, and plain sights. Horizontal circle with scale of degrees; revolving compass (with bubble level) and alidade with vernier; telescope and bubble level mounted on index arm moving over vertical arc with "Links of Chain" on one side and depression and elevation scale on the other, read by vernier. With case containing plain sights.

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