declination protractor

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• Protractor compass — The protractor compass is a type of compass commonly often used in hill walking, orienteering and other outdoor sports and pursuits.Named after the protractor, a protractor compass consists of a baseplate, with an inscribed direction of travel… …   Wikipedia

• Compass — This article is about the direction finding instrument used in navigation. For other uses, see Compass (disambiguation). A simple dry magnetic pocket compass …   Wikipedia

• Hand compass — Parts of a hand compass A hand compass (aka hand bearing compass or sighting compass) is a term for any compact magnetic compass capable of one hand use and fitted with a sighting device to record a precise bearing or azimuth to a given target or …   Wikipedia

• Mercator projection — of the world between 82°S and 82°N. Mercator world …   Wikipedia