What is the LARS rule when converting a magnetic azimuth to a grid azimuth?

The LARS rule is a mnemonic device used to convert a magnetic azimuth to a grid azimuth effectively. It stands for "Left Add, Right Subtract." When applying this rule, the direction of your movement as you visualize it plays a crucial role in determining whether you will add or subtract from the magnetic azimuth based on the grid north.

When you need to convert a magnetic azimuth to a grid azimuth, you must consider the orientation of the magnetic north and the grid north. If you are moving left on the map as you face your azimuth, you will add an angle (which accounts for the difference between magnetic north and grid north). Conversely, if you are moving to the right, you need to subtract from your magnetic azimuth. Understanding this method allows for accurate navigation and ensures that the azimuths you work with align with the grid representation on the map.

Recognizing that the other options do not convey the fundamental principle of the LARS rule distinguishes its clarity and functional application in real-world scenarios.