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A dip needle, also called a dip circle, is a compass that is used to measure the angle between the horizon and the Earth’s magnetic field, which is the “dip angle”. Scientific instruments such as this one were also used not only for the demonstration and study of magnetism. but also in surveying, mining and prospecting. The magnetic dip needle or miner's compass was the first scientific instrument to be professionally used for locating ore bodies in the past centuries. This antique device dates from the XIXth century. It is made of black painted brass, brass, magnetized steel and wood. The measuring disk is graduated over 360° . It can be used horizontally or vertically. A threaded hole underside indicates that it was made to be supported on a stand.
Dimensions: 20 cm tall to the top of the disk; 20 cm across from back of handle to tip of arch or hoop.
État: Very good vintage condition for such an old instrument. Some flaking of black paint and traces of white paint on black column. Complete and seems functional. Slight warp easily corrected.
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NOTE: All our products are antique or vintage. We strive to purchase and present only items in good to near-mint condition, but most pieces will show some degree of wear that we try to describe and show in our pictures.
XIXth Century Dip Needle Compass
- Product Code: B547
- Availability: 1
Tags: engineering and technology history, scientific instruments, geophysics, geomagnetism, geomagnetic field measurementl, magnetic field measuring device, dipping needle, dip circles, miners's compass, magnetic dip needle, inclination dip circle compass