www.antik.it/Antique-compasses/8401-Prismatic-Compass/
Code 8401
EUR 500.00
In stock
1777566933Code 8401 Prismatic CompassA small brass prismatic bearing compass, signed St. Pan. Gar. London No. 143537 from 1918, Verner's Pattern VIII, named after its designer, Colonel William Willoughby Cole Verner (1852-1922).
It was produced in 1918 for British officers, typically used for navigation. It can also be handheld and used away from magnetic fields.
It features a sighting system with a prism for magnifying the reading of a goniometric compass rose designed to precisely measure the angle between the line of sight and magnetic north.
Complete with compass rose lock.
Good condition. In perfect working order.
Dimensions: 5.5 x 2 cm – 2.2 x 0.7 in.
The Greeks and Romans were still unaware of the possibility of exploiting magnetic fields for orientation, while it seems that this possibility was already somewhat known to the Chinese: around 2600 BC, Emperor Hoang-Ti managed to defeat Prince Tchi-Yeou in battle thanks to a "magic" chariot, the See-Nan (chariot indicating south). Thanks to this device, the emperor identified the enemy's escape route, even though the enemy had hidden it with a blanket of smoke. Fixed to the chariot was a wooden human-shaped figure that rotated on itself and, with its arm outstretched, always pointed south (indicating south obviously also indicated north, but south was considered the most important cardinal point by the Chinese). The Chinese also used their discoveries relating to magnetic fields as a form of entertainment and spectacle: they threw magnetized arrows like dice, and these aligned in a south-north direction as if by magic, which greatly impressed and amazed the spectators.
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Antique compasses
Code 8401 Prismatic Compass
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