Section 114 Land Navigation Flashcards
what is a map named after
most prominent cultural or geographical feature
largest city on the map where possible
where is the sheet name located
center of upper margin and EITHER right/left side of lower margin
what is a sheet number used for
reference number for that map sheet
the sheet number is found in what 2 places
upper right and lower left margin
what representative fraction does a scale offer
ratio of a distance on the map to the corresponding distance on the earths surface
where is the scale located
upper left margin after the series name AND center of the lower margin
what is the purpose of the elevation guide
helps you rapidly identify major land forms
where is the elevation guide located
lower right margin
what does the declination diagram indicate
the angular relationships of true north, grid north, and magnetic north (located in the lower margin)
bar scales are used to convert what
mar distance to ground distance
where are bar scales located
center of the lower margin
the legend helps identify what
topographic symbols
where is the legend located
lower left margin
what are grid lines
straight lines intersected at right angles forming a series of squares
how do grid squares measure on the most common military map
1,000X1,000 meters (not square meters)
what is the basic map reading rule
read right then up
a four digit grid coordinate locates a point within how many square meters
1,000
a six digit grid coordinate locates a point within how many square meters
100
a eight digit square coordinate located a point within how many square meters
10
what is true north
a line from any point on the earths surface to the north pole
how can true north be located at night
North star
when is true north utilized
when traveling without a compass
how is true north represented on the declination diagram
a line ending with a star
how is magnetic north symbolized on the declination
a line ending with a half arrowhead
