S. 114 land nav 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 # used for
reference # for that map sheet
the sheet # 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 ID major land forms
where is the elevation guide located
lower right margin
what does the declination diagram indicate
the angular relationship of true north, grid north, and magnetic north (located in lower margin)
bar scales are used to convert what
map distance to ground distance
where are bar scales located
center of the lower margin
the legend helps ID 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
what is the basic map reading rule
read right the 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 8 digit grid coordinate locates 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 indicated
north seeking arrow of lensatic compass
