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  2. Brunton compass - Wikipedia

    en.wikipedia.org/wiki/Brunton_compass

    A Brunton compass, properly known as the Brunton Pocket Transit, is a precision compass made by Brunton, Inc. of Riverton, Wyoming. The instrument was patented in 1894 by Canadian-born geologist David W. Brunton. [1] Unlike most modern compasses, the Brunton Pocket Transit utilizes magnetic induction damping rather than fluid to damp needle ...

  3. Silva compass - Wikipedia

    en.wikipedia.org/wiki/Silva_compass

    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.

  4. Francis Barker & Son - Wikipedia

    en.wikipedia.org/wiki/Francis_Barker_&_Son

    Francis Barker & Son was established as F. Barker & Son in Clerkenwell, London in 1848. In that same year, the proprietor entered into partnership with Richard Groves in order to manufacture precision instruments such as portable sundials and field compasses. [3]

  5. Compass - Wikipedia

    en.wikipedia.org/wiki/Compass

    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.

  6. HRG gyrocompass - Wikipedia

    en.wikipedia.org/wiki/HRG_gyrocompass

    The HRG gyrocompass is a complete unit, which unlike a conventional compass, has no rotating or other moving parts. It has an outstanding reliability. [ 1 ] Its operational Mean Time Between Failure (MTBF) values are improved over a Fiber Optic Gyrocompass and also conventional mechanical gyrocompass.

  7. Cammenga - Wikipedia

    en.wikipedia.org/wiki/Cammenga

    This includes an overall inherent accuracy standard of ±40 mils (2.25 degrees) from actual magnetic azimuth; [1] [2] a tritium illumination test; [3] and a shock or impact test, in which samples of the M-1950 are tested dropping the compass from a height of 90 cm (35 in.) on a solid surface covered with 10 cm (4 in.) of plastic-covered sand ...

  8. The 3 Most Overpriced Cities in America, According to Gen Z ...

    www.aol.com/3-most-overpriced-cities-america...

    Realtor.com reported the sale price per square foot was $903. Nearly 40% of 18- to 24-year-olds surveyed names New York City as the most overpriced housing market in the country. Despite higher ...

  9. Geological compass - Wikipedia

    en.wikipedia.org/wiki/Geological_compass

    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. [1] [2] In this aspect the most common device used to date is the analogue compass.

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