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Total Force Needles Object Reg. No: ST 022133

Pair of total force needles, 9 cm long, each with three weights, in a wooden box and zinc case. Needles marked '3A and B', '4A and B'. Used at Melbourne Observatory to measure changes in the Earth's magnetic field.
Acquisition Information:
Transfer from Melbourne Observatory, 1945
Discipline: Technology

More information

Tagged with: dip needles, geophysical apparatus instruments, total force needles
Themes this item is part of: Magnetic Observations at Flagstaff & Melbourne Observatories, Melbourne Observatory Collection, Science & Measurement Collection, Positional Astronomy at Melbourne Observatory, Weights & Measures at Melbourne Observatory, Melbourne Observatory & Standard Time in Victoria, Astrographic Catalogue, Transits of Venus, 1874 & 1882, Buildings at Melbourne Observatory, Star Observations & Personal Equation, Meteorology at Melbourne Observatory, 1863-1908, Melbourne Observatory, 1863-1944, Geodetic Survey of Victoria, 1858-1872
Primary Classification: PHYSICAL SCIENCES
Secondary Classification: Geophysics - Geomagnetism
Tertiary Classification: measuring equipment
User: Melbourne Observatory, South Yarra, Victoria, Australia

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