Garmin GPS> Using the Military Grid System

This video shows you how to configure your Garmin GPS to use the Military Grid System and enter a Waypoint to navigate to.

The Military Grid Reference System (MGRS) is a geocoordinate standard used by the military for locating points on Earth. It’s based on the Universal Transverse Mercator (UTM) projection and provides a precise, grid-based method for identifying locations. Here’s a concise breakdown:
• Structure: An MGRS coordinate consists of:
○ Grid Zone Designator (GZD): A number (1–60) for the UTM zone and a letter (C–X) for the latitude band (e.g., "38S" for UTM zone 38, southern hemisphere).
○ 100,000-meter Square Identifier: Two letters (e.g., "LC") identifying a 100 km × 100 km square within the grid zone.
○ Easting and Northing: Numeric values (in meters) pinpointing a location within the 100,000-meter square. These can vary in precision (e.g., 1 m, 10 m, 100 m), typically given as 5 digits each for 1-meter accuracy (e.g., "12345 67890").
• Example: An MGRS coordinate like 38SLC1234567890 indicates:
○ 38S: UTM zone 38, southern hemisphere.
○ LC: A specific 100,000-meter square.
○ 12345: Easting (x-coordinate, 12.345 km east of the square’s origin).
○ 67890: Northing (y-coordinate, 67.890 km north of the square’s origin).
• Purpose: MGRS is designed for simplicity and precision, especially for ground operations, allowing quick plotting on maps and interoperability with GPS devices like the Garmin GPSMAP 66st. It’s widely used by NATO and other military forces.

Garmin GPS devices support many different coordinate formats.

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