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Measuring Rods - 10 Foot, Geodetic Survey of Victoria, 1860 Object Reg. No: ST 039785

Three iron measuring rods used in the Geodetic Survey of Victoria in the 1860s. The measuring rods were used to measure accurately a base line of approximately 5 miles near Werribee. Directed by Government Astronomer Robert Ellery, the geodetic survey proceeded by triangulation from the base line and was completed in 1870. This precise survey of Victoria, taking into account the curvature of the earth's surface, provided the reference points for all subsequent surveys.

The measuring rods were made in Victoria against the New South Wales standard, which had been obtained from the Ordnance Survey in Southampton, England.

The South Base Stone and North Base Stone at Werribee are listed on the Victorian Heritage Register (H1957).
Each measuring rod has two levels and three thermometers (one thermometer missing on rods 'II' and 'III').
Acquisition Information:
Transfer from Melbourne Observatory, 1945
Discipline: Technology
Dimensions: 14 cm (Height), 12 cm (Width), 305 cm (Length)
Dimension Comment: Dimensions of each case.

More information

Tagged with: geodetic surveys, surveying apparatus instruments, robert ellery, south base stone
Themes this item is part of: Geodetic Survey of Victoria, 1858-1872, Melbourne Observatory Collection, Engineering Collection, Science & Measurement Collection, Transport Collection, Great Melbourne Telescope, Robert Lewis John Ellery, Astronomer & Scientist (1827-1908), Positional Astronomy at Melbourne Observatory, Melbourne Observatory & Standard Time in Victoria, Mapping the Stars at Melbourne Observatory, Meteorology at Melbourne Observatory, 1863-1908, Williamstown Observatory, 1853-1863, Williamstown Observatory, 1853-1863, Melbourne Observatory, 1863-1944
Primary Classification: SURVEYING & NAVIGATION
Secondary Classification: Linear - Surveying
Tertiary Classification: linear distance
Inscriptions: Thermometers marked 'Thomas Jones 62 Charing Cross London'. Wooden cases marked 'I', 'II' and 'III'.
Maker: Mr Thomas Jones, London, Middlesex, England, Great Britain
User: Mr Robert Ellery, Melbourne, Victoria, Australia, 1860
User: Williamstown Observatory, Williamstown, Victoria, Australia, 1860
User: Victoria: Geodetic Survey of Victoria, Werribee, Victoria, Australia, 1860

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