Summary
Altazimuth theodolite, 14 cm circle, made by Ertel & Sohn, Munich, circa 1850
Used in the Geodetic Survey of Victoria for minor triangulation. Later used by George Black and his son G. D. Black in connecting Walhalla to the major triangulation via Mts. Useful & Ben Cruachan.
Physical Description
Brass, horizontal and vertical silver circles, each with 2 verniers and readers. Telescope and vertical dial mounted at opposite ends of trunnion, spirit level set parallel to trunion,
More Information
-
Collecting Areas
-
Acquisition Information
Donation from Titles Office, Victoria: Crown Lands & Survey Department, 13 Oct 1936
-
Maker
-
User
Victoria: Geodetic Survey of Victoria, Victoria, Australia, 1858-1872
-
Inscriptions
Tribrach base inscribed "ERTEL & SOHN IN MUNCHEN".
-
Classification
Surveying & navigation, Optical - surveying, Angular measurement
-
Category
-
Discipline
-
Type of item
-
Overall Dimensions
26 cm (Height), 14 cm (Outside Diameter)
-
Keywords
