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MSL 301
Rev. 15 Apr 2005
MSL 301, Lesson 3a: Land Navigation I
Slide 3 of 57
Objectives
Become familiar with marginal information on a mapsheet
Identify topographic symbols on a military map
Identify the five major, three minor and two supplemental terrain features on a map
Determine grid coordinates on a map Measure straight-line and road distance on
a map
MSL 301
Rev. 15 Apr 2005
MSL 301, Lesson 3a: Land Navigation I
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Marginal Information
Sheet Name
Sheet Number
Adjoining Map Sheets Diagram
Tenino
MSL 301
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MSL 301, Lesson 3a: Land Navigation I
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Marginal Information Special Notes
Declination Diagram
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MSL 301, Lesson 3a: Land Navigation I
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Marginal Information Scales
Contour Interval Notes
Grid Reference Box
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MSL 301, Lesson 3a: Land Navigation I
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Marginal Information Unit Imprint
Legend
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MSL 301, Lesson 3a: Land Navigation I
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Colors used on a Military Map Black: Man-made features
Blue: Water features
Brown: Relief features and elevation on older or red-light
readable maps
Green: Vegetation
Red: Man-made features
Red-Brown: Cultural features and non-surveyed spot
elevations
Other: Occasionally other colors may be used to show
special information and if used will be noted in the marginal
information.
MSL 301
Rev. 15 Apr 2005
MSL 301, Lesson 3a: Land Navigation I
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Topographic Symbols: Black
MSL 301
Rev. 15 Apr 2005
MSL 301, Lesson 3a: Land Navigation I
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Topographic Symbols: Red
MSL 301
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MSL 301, Lesson 3a: Land Navigation I
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Topographic Symbols: Blue
MSL 301
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MSL 301, Lesson 3a: Land Navigation I
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Topographic Symbols: Green
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MSL 301, Lesson 3a: Land Navigation I
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Topographic Symbols: Brown Contour Lines
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MSL 301, Lesson 3a: Land Navigation I
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Terrain Features
Five Major Ridge Hill Saddle Valley Depression
Three Minor Draw Spur Cliff
Two Supplemental Cut Fill
MSL 301
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MSL 301, Lesson 3a: Land Navigation I
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Uniform, Gentle Slope
Insert figure 10-6
MSL 301
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MSL 301, Lesson 3a: Land Navigation I
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Convex Slope
Insert figure 10-6
MSL 301
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MSL 301, Lesson 3a: Land Navigation I
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Contour lines around a slope
Insert figure 10-6
MSL 301
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MSL 301, Lesson 3a: Land Navigation I
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Measuring horizontal distance
Insert figure 10-6
MSL 301
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MSL 301, Lesson 3a: Land Navigation I
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Percentage of Slope in meters
Insert figure 10-6
MSL 301
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MSL 301, Lesson 3a: Land Navigation I
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Degree of Slope
Insert figure 10-6
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MSL 301, Lesson 3a: Land Navigation I
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Gradient Slope
Insert figure 10-6
MSL 301
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MSL 301, Lesson 3a: Land Navigation I
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Protractor(GTA 5-2-12, 1981)
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MSL 301, Lesson 3a: Land Navigation I
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Determining Grid Coordinates Select the correct scale on the protractor. Place the horizontal scale on the grid line
with the “0 mark” at the lower left-hand corner of the grid square.
Slide scale right into until the vertical scale intersects the center of your plot point.
Read right then read up
MSL 301
Rev. 15 Apr 2005
MSL 301, Lesson 3a: Land Navigation I
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Four-Digit Grid Coordinates
Read Right
The
n U
p
EH 78 00 1) Identify the 100, 000 Grid Square Identification Letters (in the Grid Reference Box).
2) Read Right to the last grid before your point.
3) Read Up to the last east-west grid below or before your point.
MSL 301
Rev. 15 Apr 2005
MSL 301, Lesson 3a: Land Navigation I
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Place your protractor scale on the Zero-Mark( )
Zero “0” Mark
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MSL 301, Lesson 3a: Land Navigation I
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Six-Digit Grid Coordinates
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MSL 301, Lesson 3a: Land Navigation I
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Eight-Digit Grid Coordinates
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MSL 301, Lesson 3a: Land Navigation I
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Ten-Digit Grid Coordinates
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MSL 301, Lesson 3a: Land Navigation I
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Graphic Scale
Statute Miles
Kilometers
Nautical Miles
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MSL 301, Lesson 3a: Land Navigation I
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Straight Line Distance
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MSL 301, Lesson 3a: Land Navigation I
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Conclusion
Become familiar with marginal information on a mapsheet
Identify topographic symbols on a military map
Identify the five major, three minor and two supplemental terrain features on a map
Determine grid coordinates on a map Measure straight-line and road distance on
a map
Recommended