Navigation Made Simple: Using a Compass Adapted from MIKE CLIFFORD

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Navigation Made SimpleUsing a Compass
Adapted from MIKE CLIFFORD
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USING A MAGNETIC COMPASS
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Cardinal Directions
North - 0 or 360 East - 90 South - 180 West -
270
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Magnetic vs. Geographic
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True North

• The geographic position referring to the
  direction of the North Pole relative to the
  navigator's position. The direction of true
  north is marked in the skies by the celestial
  north pole. For most practical purposes, this is
  the position of Polaris. However, due to the
  precession of the Earth's axis, true north
  rotates in an arc that takes approximately 25,000
  years to complete.

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Magnetic North

• The geographic region toward which all magnetic
  needles point. This is approximately 1,300 miles
  South of True North and moves slightly each year
  due to the Earths rotation and the friction
  created between its solid crust and liquid center.

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FOUR COMPASS STYLES ...
BASEPLATE - MIRROR - LENSATIC -
SIGHTING
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Baseplate Compass

• This type of compass was invented by the
  Kjellstrom brothers during the World War II era
  and consists of a rectangular baseplate, which is
  marked with a red arrow pointing along the long
  axis, and a rotating compass housing marked in
  degrees. This basic compass is used for
  navigation with a map or by bearings.

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FEATURES OF THE ORIENTEERING STYLE BASEPLATE
COMPASS
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The Brunton Company
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Mirror Compass

• The mirror allows you to view the compass dial
  and the background at the same time.  And the
  fact the compass dial can be seen at the same
  time the target is aligned, makes mirror
  compasses better for taking accurate bearings.  

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Mirror Compass
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Lensatic Compass

• The Lensatic, a design preferred by military
  forces for its precision and durability, is
  designed to take hyper-accurate bearings for land
  navigation and directing artillery fire!It is
  composed of four basic parts, the compass card
  (rose) itself, with housing, degree scale and
  rotating bezel the sighting-wire unit/top cover
  the thumb hook and the lens for which it is
  named.

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LENSATIC COMPASS
From A Comprehensive Guide to Land Navigation
with GPS by Noel Hotchkiss
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From A Comprehensive Guide to Land Navigation
with GPS by Noel Hotchkiss
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Sighting Compass

• Holding the Sighting Compass up to your eye, you
  can look down through the eyepiece and see the
  compass numbers while alternately looking over
  the top of the compass to view the subject.

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Sighting Compass
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Compass Only 1. Select an on-route landmark.
Hold compass level and point the
Direction of Travel Arrow at the landmark. 2.
Find your heading to the landmark by turning
compass dial until the N aligns with the
Red end of the Needle. Read heading at
the Index Line. 3. Keep the Needle aligned
with the N. Sight and move toward your
landmark. Repeat procedure until you
reach your destination.

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Compass Heading 1. When given a heading in
degrees, turn the Dial so the heading is set at
the Index Line. Hold compass level with the
Direction of Travel Arrow pointing straight
ahead. 2. Turn your body until the Red end of
the Needle is aligned with the N on the
Dial.Travel in this direction. 3. Pick out a
landmark in line with your heading. Move toward
it. Repeat procedure until you reach your
destination.
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THE END