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Contents

1. Training strategy
2. Maps
3. Marginal information and symbols
4. Grids
5. Scale and distance
6. Direction
  - Methods of expressing direction
  - Base lines
  - Azimuths
  - Grid azimuths
  - Protractor
  - Declination diagram
  - Intersection
  - Resection
  - Modified resection
  - Polar coordinates
7. Overlays
8. Aerial photographs
9. Navigation equipment and methods
10. Elevation and relief
11. Terrain association
12. Mounted land navigation
13. Navigation in different types of terrain
14. Unit sustainment

A. Field sketching
B. Map folding techniques
C. Units of measure and conversion factors
D. Joint operations graphics
E. Exportable training material
F. Orienteering
G. M2 compass
H. Additional aids
I. Foreign maps
J. Global positioning system
K. Precision lightweight global positioning system receiver

Survival Gear

Handheld GPS
Specialty Outdoor Gear
Digital Compasses
Survival Books
Hunting and Fishing Magazines

6-4. GRID AZIMUTHS

When an azimuth is plotted on a map between point A (starting point) and point B (ending point), the points are joined together by a straight line. A protractor is used to measure the angle between grid north and the drawn line, and this measured azimuth is the grid azimuth (Figure 6-4).

Figure 6-4. Measuring an azimuth.

Figure 6-4. Measuring an azimuth.

WARNING

When measuring azimuths on a map, remember that you are measuring from a starting point to an ending point. If a mistake is made and the reading is taken from the ending point, the grid azimuth will be opposite, thus causing the user to go in the wrong direction.



Direction
Methods of expressing direction | Base lines | Azimuths | Grid azimuths | Protractor | Declination diagram | Intersection | Resection | Modified resection | Polar coordinates |




Buy The Book This Site Is Based On
The 'Land Navigation' section of this site is based on 'Map Reading and Land Navigation', a public domain work published by the U.S. Department of Defense that is available for sale at Amazon.com.




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