Land Navigation Map Reading Basic Map Skills Identify
Land Navigation Map Reading Basic Map Skills
Identify Map colors Identify Map Symbols
Identify Marginal Information Identify Terrain Features Basic Map Skills
Identify Elevation Grid vs. Magnetic Azimuth Determine Azimuth Back Azimuth Determine Distance
Map Colors Black - Indicates cultural (man-made)
features such as buildings and roads, surveyed spot elevations, and all labels Red-Brown - Combined to identify cultural features, all relief features, nonsurveyed spot elevations, and elevation, such as contour lines on red-light readable maps
Blue - Identifies hydrography or water features such as lakes, swamps, rivers, and drainage Green - Identifies vegetation with military
significance, such as woods, orchards, and vineyards Brown - Identifies all relief features and elevation, such as contours on older edition maps, and cultivated land on redlight readable maps
Map Colors Red - Classifies cultural features,
such as populated areas, main roads, and boundaries, on older maps Other - Occasionally other colors may be used to show special information. These are indicated in the marginal information as a rule
VGT 5 VGT 6 VGT 7
VGT 8 Identify Map Symbols Refer to Legend
Geographic area and scale - top left
Name of map sheet - top center Map edition, map series, and map sheet number - top right Legend - bottom left Bar scale, contour interval, grid reference box, and declination diagram - bottom center
Elevation guide, adjoining map sheet diagram, and boundaries box - bottom right Terrain Features - Major
Valley Saddle Depression Terrain Features - Minor
Draw Spur Terrain Features Supplementary
Fill Identify a Grid VGT 23
VGT 24 Identifying a Grid
Read Right then Up Bottom left corner identifies first
two digits I.e. 12__56__ Use coordinate scale to identify last two digits I.e. __34__78 Add proper grid zone designator to front I.e. AB ________
Identify Elevation Elevation
Locate point on the map Determine contour interval of map Locate index contour line nearest point Count number of contour lines up or down that must be crossed to get to point Points at top of hill add half the contour
interval Points at bottom of depression subtract half the contour interval Grid vs. Magnetic Azimuth
THREE NORTH'S N TRUE NORTH VGT 32
MAGNETIC NORTH GN GRID NORTH
Determine Azimuth VGT 55 Determine Azimuth
Plot location of two points
Use straight edge to draw line between both points (line must be long enough to cross scale on protractor) Use protractor to determine azimuth
VGT 43 VGT 44 VGT 45
VGT 46 VGT 59 Determine Back Azimuth
Back Azimuth - azimuth taken from a distant point toward your location Used in Resection Numbers less than 180 - add 180 Numbers greater than 180 - subtract
180 Determine Distance Determine Distance
Use edge of paper and mark distance between points Line paper up next to scale to determine distance
Road Distance Break curve into series of straight lines and measure from curve to curve
Line paper up next to scale to determine distance Advanced Skills
Intersection Resection PRACTICAL EXERCISE TENINO
YOU ARE AT A STRUCTURE IN AN UNKNOWN LOCATION. YOU DETERMINE THAT SPOT ELEVATION\ 215 IN GRID SQUARE EG1686 IS ON A MAGNETIC AZIMUTH OF 358 1/2 DEGREES. YOU ALSO SEE THE WATER TOWER IN GRID SQUARE EG1185. IT IS ON A MAGNETIC AZIMUTH OF 290 DEGREES FROM YOUR POSITION. DETERMINE WHICH STRUCTURE YOU ARE LOCATED
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