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Walker`s slæbelog
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1.050 kr.
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Varebeskrivelse
Stand: Som ny - ingen synlige brugsspor
Denne antikke log er ny, har aldrig være pakket helt ud.
The Walker’s Excelsior IV Patent Log is a nautical instrument for measuring a vessel’s speed and distance travelled. When navigating a ship it is essential to be able to estimate the boat’s speed and distance travelled to determine its position at sea. In 1878, Thomas Ferdinand Walker (1837–1921), an engineer in Birmingham, patented a mechanical log in which a recording instrument was attached to a rail at the stern of a vessel connected by a long cord with a rotor which was towed behind the ship. The instrument dial recorded the distance travelled.
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Sidst redigeret: 16.10.2026 kl. 12:55 ・ Annonce-ID: 25539513
