ATTENTION TREASURE HUNTERS
Television Producers are searching for Treasure Hunters that are ready to find
I believe that the best compass to use for treasure hunting is the lensatic
compass, I will limit my descriptions and uses of the compass to the lensatic.
Remember, however, that compass basics will work on all compasses.
lensatic compass consists of the following major parts:
closed, the cover protects the glass window of the body and the floating dial
from damage. It contains a sighting wire mounted vertically in a slit, and two
luminous dots (one at each end of the wire) that are used at night.
Base is the heart of the compass. It contains:
floating dial, mounted inside the body. The dial can move freely when the
compass is held level. The dial has a three luminous markings on it. A
luminous arrow, and two letters "W" (west), and "E"
(east). The dial has two sets of numbers etched into the outer rim. The
outer most of the two is mils (mils is a system used by the military and not
very useful for our purposes). The inner most of the two is degrees (more on
this later). The degree scale may be black or red. When allowed to swing
free, the dial will always point north.
bezel ring is attached to the rim of the base. It is knurled and, when
turned, "clicks." If the bezel is turned one complete turn, there
will be 120 clicks. One click will equal 3 degrees (more on this later). An
outer glass window is attached to the bezel. This windows has a "short
luminous line". This line rotates as the bezel is turned and is
used at night (more on this later).
lens a mounted on a hinged metal plate. This lens is used to look at the
floating dial when making precise measurements. A slit in the metal plate just
above the lens is used like the rear sight of a rifle. When the lens plate is
pushed against the base, it locks the dial to prevent damage when the compass is
carried a the pocket or hanging by a cord. To release the dial, the lens plate
must be lifted more than 45 degrees from the base.
opened flat, the base and cover provide a straight edge with a graduated scale
for use on maps. The scale is calibrated for 1:50,000 scale maps. This is a
standard military topographical map. Civilian maps, such as those from the US
Geological Survey, are 7 1/2 minute series (1:24,000 scale) and so WILL NOT give
accurate measurements without complicated conversions.
The magnetic needle mounted onto the floating dial is affected by metal objects.
The larger the object, the farther away you must be from it. Also, power lines
produce a large magnetic field around them which also affects the compass. Stay
very far away from these power lines.
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for books and equipment for Land Navigation in the Mercantile
a tip or technique