Summary
Altitude and azimuth instrument, 12 inch circle, made by Troughton & Simms, London.
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.
Physical Description
Circles graduated on silver & read by verniers. In two wooden boxes: 1. stand and horizontal circle; 2. telescope and vertical circle.
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
Troughton & Simms, London, Middlesex, England, Great Britain
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User
Victoria: Geodetic Survey of Victoria, Victoria, Australia, 1858-1871
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User
Melbourne Observatory, South Yarra, Greater Melbourne, Victoria, Australia
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Inscriptions
Marked "S.G.O. 103". [ie Surveyor General's Office] Labels inside boxes: "R. SKILTON, INSTRUMENT MAKER".
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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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Overall Dimensions
38 cm (Length), 38 cm (Width), 70 cm (Height)
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Exhibition Collection Management
38 mm (Length), 38 mm (Width), 70 mm (Height)
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Keywords
