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How to Use a Bearing Circle
Note
Follow the steps in the table to properly obtain a bearing.
Step
1.
2.
3.
4.
5.
6.
7.
Action
Place the ring on top of the repeater, then gently
twist the handles to lock in place.
Orient the bearing circle with the peep sight
nearest to you and the far vane closest to the
object to be sighted.
Look through the peep sight and view the object
inside the far vane.
Rotate the bearing circle left or right to align the
vertical wire in the far vane with the center of the
object.
Keep the bearing circle level by observing the
spirit level.
When the object is in line with the peep sight and
wire, observe the bearing reflected from the mirror
in the housing from the compass card.
Determine which compass mark is aligned with
the crosshair seen in the mirror, and read the
bearing.
Information concerning how to use the azimuth circle will be presented
in the Celestial Navigation chapter.
2-25
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