liquid compass การใช้

Despite these advances, the liquid compass was not introduced generally into the Royal Navy until 1908.
A rudimentary working model of a liquid compass was introduced by Sir Edmund Halley at a meeting of the Royal Society in 1690.
However, as early liquid compasses were fairly cumbersome and heavy, and subject to damage, their main advantage was aboard ship.
The liquid compass is a design in which the magnetized needle or card is damped by fluid to protect against excessive swing or wobble, improving readability while reducing wear.
However, with ship and gun sizes continuously increasing, the advantages of the liquid compass over the Kelvin compass became unavoidably apparent to the Admiralty, and after widespread adoption by other navies, the liquid compass was generally adopted by the Royal Navy.