Summary
Dip circle made by Henry Barrow & Co, London. Kew pattern, No. 41, circa 1860. Used at Melbourne Observatory.
This was used to measure the total force as well as the inclination to the horizontal of the earth's magnetic field.
Physical Description
Contents from List of Parts Field: Dip circle Wooden box Leather strap Dip needle Circle divided to 0.5 degrees, and vernier divided from 0 to 30, enabling minutes of arc to be read off.
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
Henry Barrow & Co, 26 Oxendon Street, London, Middlesex, England, Great Britain, circa 1860
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User
Melbourne Observatory, South Yarra, Greater Melbourne, Victoria, Australia, circa 1860
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Inscriptions
Marked on circle "HENRY BARROW & CO. 26 OXENDON ST. LONDON". "No. 41" Marked on wooden frame "327"
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Classification
Physical sciences, Geophysics - geomagnetism, Measuring equipment
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Category
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Discipline
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Type of item
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Overall Dimensions
30 cm (Length), 24 cm (Width), 23 cm (Height)
Wooden box dimensions.
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Dimensions
228 mm (Length), 235 mm (Width), 315 mm (Height)
Measurement From Conservation. Measuring Method: Max. dimensions as per conservation requirements.
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Keywords
Dip Circles, Geophysical Apparatus & Instruments, Magnetic Instruments
