кут зближення меридіанів
declination
declination diagram
magnetic declination
declination aiming circle (declinated aiming circle)
declination chart
declination index
declination pin
angle of declination
magnetic variation / magnetic declination
grid declination
declination constant
declination protractor
declination statement
declination station
planimetric map syn. line map
grid map / gridded map
army map service
artillery map
base map
communications map
general map
going map
image map
log map
map
map analysis
map carrier
map convergence
map distribution
map exercise
map grid
map maneuver