117 Land nav Flashcards
1
Q
how do you obtain a back azimuth
A
if original azimuth is 180 subtract 180
2
Q
4 digit grid =
6 digit grid =
8 digit grid =
A
1000
100
10m
3
Q
Plotting a grid
A
read left to “right then up”
4
Q
what does a hill look like on a map
A
concentric circles
5
Q
12 parts of lensatic compass
A
- luminous sighting dots
- Luminous magnetic arrow
- short luminous line
- Fixed index line
- sighting wire
- sighting slot
- lens
- floating dial
- bezel ring
- graduated straight edge
- rear sight
- thumb loop
6
Q
Map Features Red = Blue = Black = Brown = Green =
A
Red = main roads/population Blue = water Black = man made features Brown = contour lines/land features Green = vegetation
7
Q
what are 3 norths
A
true, grid, magnetic
8
Q
what is the purpose of a resection
A
determine unknown location with 2 known locations using back azimuth
