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.

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