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Theodolite - click to enlarge

Theodolite - click to enlarge

Theodolite - click to enlarge

Click photos to enlarge.

Theodolite

Catalogue number:
PH*330621

Inscriptions:
"Brander & Höschel in Augsberg"

Dimensions:
horizontal circle 10 inches diameter; vertical arc 3 inches radius; sighting bar 11.25 inches long

Discussion:

George Friedrich Brander (1713-1783), the most prominent German instrument maker of his time, was born in Regensburg, worked in Augsburg, and took his son-in-law, Christian Kaspar Höschel, into partnership in 1775. The horizontal circle of this theodolite is graduated to degrees, and read by vernier (marked "Quena Minute") to 5 minutes. The vertical arc is graduated to 30 minutes. The sighting bar has a pinhole sight at one end, and a glass disc with cross hairs at the other.

Ref: Alto Brachner, et. al., G. F. Brander 1713-1783. Wissenschaftliche Instrumente aus seiner Werkstatte (Munich: Deutsches Museum, 1983).

Further Information:

Theodolite

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