azimuth
ring
The rotating part of the compass that holds the damping
fluid and the magnetic needle and has degrees engraved
around its edge from 1 to 360. Also known as housing. < |
graduations
The series of degree markings on the azimuth ring used
for taking bearings. |
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bearing
The direction of travel from your current position to
a landmark or destination expressed in degrees from
1 to 360. Same as azimuth. |
declination
The difference in degrees between magnetic north (the
direction the magnetic needle on a compass points) and
true or geographical north (the direction maps are printed
toward). |
|
baseplate
The see-through plate of an orienteering compass onto
which the compass housing is mounted. |
lensatic
compass
A compass which uses a retractable lens to read the bearing
while simultaneously sighting an object. |
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scale
The distance between two points on a map as they relate
to the distance between those two points on the earth. |
protractor
Sometimes built into a compass, this instrument allows
you to determine and measure angles in degrees and is
most useful when projecting magnetic lines across your
map. |
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