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A compass is an instrument used for navigation and orientation that shows direction relative to the geographic cardinal directions (or points). Usually, a diagram called a compass rose shows the directions north, south, east, and west on the compass face as abbreviated initials. When the compass is used, the rose can be aligned with the corresponding geographic directions; for example, the "N" mark on the rose points northward. Compasses often display markings for angles in degrees in addition to (or sometimes instead of) the rose. North corresponds to 0°, and the angles increase clockwise, so east is 90° degrees, south is 180°, and west is 270°. These numbers allow the compass to show magnetic North azimuths or true North azimuths or bearings, which are commonly stated in this notation. If magnetic declination between the magnetic North and true North at latitude angle and longitude angle is known, then direction of magnetic North also gives direction of true North.
Among the Four Great Inventions, the magnetic compass was first invented as a device for divination as early as the Chinese Han Dynasty (since c. 206 BC), and later adopted for navigation by the Song Dynasty Chinese during the 11th century. The first usage of a compass recorded in Western Europe and the Islamic world occurred around 1190.

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  1. DeanMk

    T/C Compass

    What's the general opinion about this one? Just found out about it, so I'm clueless, but Utility version in '06 looks good to me. Wondering if its worth it. Please, let me know what you think. Dean
  2. D

    Thompson Center Compass .223...

    So after converting my Savage 12 FV into a 6.5 Creedmoor, I was kind of missing having a bolt action .223. Wasn't really looking, but I found this rifle on the Classifieds at too good a price to pass up (Thanks, Rey!). It came into my FFL last week, but due to life stuff, I wasn't able to pick...
  3. R

    T/C Compass II 338 Win Mag

    I managed to get my hands on one of the brand new T/C Compass II rifles in 338 Win Mag. This video is my first shooting and initial impressions. Please subscribe if you haven’t already. Thanks everybody!
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