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Physical Sciences Collection - Surveying and Geodesy

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Common Theodolite - click to enlarge

Common Theodolite - click to enlarge

Common Theodolite - click to enlarge

Click photos to enlarge.

Common Theodolite

Catalogue number:
PH*333645

Inscriptions:
"Blattner & Adam St. Louis" and "No.5698"

Dimensions:
baseplate 8 inches diameter; needle 5 inches

Discussion:

This instrument belonged to the University of Missouri-Columbia. It dates from the late 19th century, but represents a form that was widely used in the 18th century. It has a pair of sight vanes (one missing) attached to the circle, and another pair on the alidade. The circle is graduated to 30 minutes, and read by vernier to single minutes. Henry Blattner and Frank Adam were brothers-in-law, in business together from 1872 to 1891.

Further Information:

Theodolite

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