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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.
Classic geological compass (Brunton), sideview Classic geological compass (Brunton), topview. There are a number of different specialized magnetic compasses used by geologists to measure orientation of geological structures, as they map in the field, to analyze and document the geometry of bedding planes, joints, and/or metamorphic foliations and lineations.
A compass is used to measure the azimuth of the strike, and the clinometer measures inclination of the dip. [2] Dr. E. Clar first described the modern compass-clinometer in 1954, and some continue to be referred to as Clar compasses. [10] Compasses in use today include the Brunton compass and the Silva compass.
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Three compasses meant for establishing the meridian was described by Peter Peregrinus in 1269 (referring to experiments made before 1248) [102] Late in the 13th century, al-Malik al-Ashraf of Yemen wrote a treatise on astrolabes, which included instructions and diagrams on using the compass to determine the meridian (khaṭṭ niṣf al-nahār ...
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.
Björn Kjellström (September 9, 1910 – August 26, 1995), originally from Sweden, was a ski orienteering champion in Sweden and co-founder of the compass manufacturing company Silva Sweden AB [1] which produced the Silva compass. More than 25 million Silva compasses have been sold since the founding of the company.
32-point compass rose. The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography.A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each separated by 90 degrees, and secondarily divided by four ordinal (intercardinal) directions—northeast, southeast, southwest, and ...
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