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The magnetic compass was first invented as a device for divination as early as the Chinese Han dynasty and Tang dynasty (since about 206 BC). [1] [3] [34] The compass was used in Song dynasty China by the military for navigational orienteering by 1040–44, [22] [35] [36] and was used for maritime navigation by 1111 to 1117. [37]
The Proportional Compass or Sector and its History, Kochi Arts & Science Space. The Scales of the Galilean Sector quotations from: "The Geometric and Military Compass” by G. Galilei (archived 2008) Cole Military Sector at the IBM Archives; A typical sector and how to use it by Christopher J. Sangwin
A modern military compass, with included sight device for aligning. A compass is a device that shows the cardinal directions used for navigation and geographic orientation. It commonly consists of a magnetized needle or other element, such as a compass card or compass rose, which can pivot to align itself with magnetic north.
The M-1950 U.S. military lensatic field compass with self-luminous lighting (designated the Model 3H by Cammenga) is fitted with self-luminous tritium vial lighting. Under U.S. military specification (MIL-SPEC) performance criteria, ten pre-production samples of the M-1950 are required to meet a battery of performance, durability, and accuracy ...
An Elliot Bros London First World War British Army military sketching board says "Major Verners Patent". It is 24 cm high and 17.5 cm wide. He took out patents to improve a cavalry sketch board which was designed to be used strapped to the wrist. [4] [1] In 1895 Verner had a novel version of a prismatic compass named after him with a luminous ...
The Adrianov compass (Russian: Компас Адрианова) is a military compass designed by Russian Imperial Army topographist Vladimir Adrianov in 1907. Wrist-worn versions of the compass were then adopted and widely used by the Red and Soviet Army . [ 1 ]
Silva Field baseplate compass on a map. Silva Sweden AB is an outdoors products company that sells handheld compasses and other navigational equipment including GPS tools, mapping software, aircraft altimeters, and marine navigation tools.
One of 24 competitors at the night urban warfare orienteering course during the 2009 Department of the Army Best Warrior Competition at Fort Lee, Virginia. Land navigation is the discipline of following a route through unfamiliar terrain on foot or by vehicle, using maps with reference to terrain, a compass, and other navigational tools. [1]