магнітне відмінювання координатної сітки
grid zone / grid-zone
grid zone designation / Grid Zone Designator
JAN grid / Joint Army-Navy grid
muzzle velocity variation
compass variation
diurnal temperature variation
east variation
magnetic variation chart
pressure variation
magnetic variation / magnetic declination
variation chart
variation correction
variation
bearing grid angle
Global Information Grid (GIG)
grid azimuth
grid bearing
grid convergence
grid convergence factor
grid coordinate system
grid line
grid magnetic angle
grid north (GN)
grid note
grid reference box
grid reference system
interval of grid lines
map grid
mil grid
military grid (cart.)
military grid reference system (MGRS)
navigational grid