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Download The Parts of the Compass - 2137 Calgary Highlanders
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HOW A COMPASS WORKS • Magnetic Needle – Permanently magnetized needle is placed on a pivot and rotates freely in the horizontal plane. • Earth’s Magnetic Field – Exerts forces on the compass needle, causing it to rotate until it comes to rest the the same direction as the magnetic field. • Magnetic Pole – The north magnetic pole is located about 1000Km from the geographical north pole. • Horizontal Force – Responsible for the direction in which the compass needle is oriented. • Shift – The magnetic field allows the magnetic north pole to shift geographic position about 5-10cm per year. 405.07 Red Star OHP-1 The Parts of the Compass Sight Sighting Line Sighting Mirror Magnetic Needle Orienting Arrow Screwdriver Luminous Point Adjustable Wrist Lock Safety Cord 405.07 Red Star OHP-2 Care and Maintenance of the Compass • Treat your compass with respect! • Avoid extremes of temperature • Try not to drop or bang your compass use the safety cord! 405.07 Red Star OHP-3