Summary
Theodolite, 10 inch circle, by Ertel & Sohn, Munich. Horizontal circle graduated to 5 minutes and vertical circle to 10 minutes.
This instrument was used for the Geodetic Survey of Victoria, 1858-71, which established the primary surveying points throughout the colony. Also used by Melbourne Observatory.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Transfer from Melbourne Observatory, 1945
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Maker
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User
Melbourne Observatory, South Yarra, Greater Melbourne, Victoria, Australia
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Inscriptions
Marked 'Ertel & Sohn in Munchen' and 'S.G.O. 92' [ie Surveyor General's Office]
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Classification
Surveying & navigation, Optical - surveying, Angular measurement
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Category
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Discipline
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Type of item
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Keywords
Geodetic Surveys, Surveying Apparatus & Instruments, Theodolites
