Summary
Pair of dip needles, 9 cm long, in a zinc case. Needles marked: 'Dover, 5A and B', 'Dover, 6A and B'. Used at Melbourne Observatory to measure changes in the Earth's magnetic field.
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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User
Melbourne Observatory, South Yarra, Greater Melbourne, Victoria, Australia
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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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Maximum dimensions
98 mm (Length), 47 mm (Width), 9 mm (Height)
Measurement From Conservation. Metal box
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Maximum dimensions
90 mm (Length), 8 mm (Width), 25 mm (Height)
Measurement From Conservation. Needle 5A
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Maximum dimensions
90 mm (Length), 8 mm (Width), 25 mm (Height)
Measurement From Conservation. Needle 6A
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Keywords
Dip Circles, Geophysical Apparatus & Instruments, Magnetic Instruments
