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An azimuth ring is part of a navigation device, usually found on a compass but often on a map, where it may be called a "compass rose." Its principal feature is a circular ring of numbers to indicate direction.

By international convention, a circle is divided into 360 equal parts, called "degrees," with 000 being North, 090 being East, 180 being South and 270 being West. Directions are normally specified in three-digit groups. For example, someone traveling slightly North of East might be traveling 080 or 085.

The use of the compass ring(s) would be (a) to determine from a map the required travel direction in degrees, and second, to actually travel in that direction by watching the compass. Small handheld compasses are seldom printed with an azimuth ring simply because most are too small. Larger compasses, used for serious aircraft and boat navigation always have one.

Some GPS devices can provide a real-time readout of the traveler's direction in a window that displays as a small portion of an azimuth ring.

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What is a back azimuth?

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Which is the point from where an azimuth?

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What is the back azimuth of 118 degrees?

The back azimuth is the direction opposite to a given azimuth, measured in degrees. To calculate the back azimuth of 118 degrees, you add 180 degrees. Since 118 + 180 = 298 degrees, the back azimuth of 118 degrees is 298 degrees.


What is the back azimuth of 179 degrees?

The back azimuth is the direction opposite to a given azimuth. To calculate the back azimuth of 179 degrees, you would add 180 degrees. Since 179 + 180 equals 359 degrees, the back azimuth of 179 degrees is 359 degrees.


With the aid of diagram distinquish in detail the difference between astronomical azimuth and geodetic azimuth?

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