Finding North with a lensatic compass

Know Where You Are…And how to get home.

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Finding North with a lensatic compass

by tonytran2015 (Melbourne, Australia).

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(Blog No.76).

#find North, #finding North, #compass, #lensatic, #magnetic, #true North.

Finding North with a lensatic compass.

A magnetic compass uses the local magnetic field generated by the rotating core of the earth to give the rotational axis of the earth. The two directions are reasonably close.

The magnetic compass is a secondary directional instrument to people who can observe celestial bodies for navigation but is a primary practical directional instrument to people who work under the forrest canopy or underground and cannot observe any Celestial body. (Gyro-compasses are too expensive for most people).

This blog shows how to use lensatic compasses to their full capability.

1. Basic operation (working with Magnetic and True Norths).

Magnetic Declination

Figure: True North, Magnetic North and…

View original post 1,845 more words

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