умовний курс
grid zone / grid-zone
grid zone designation / Grid Zone Designator
JAN grid / Joint Army-Navy grid
grid course angle
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
grid variation
interval of grid lines
map grid
mil grid
military grid (cart.)
military grid reference system (MGRS)
navigational grid
rectangular coordinates grid
universal transverse Mercator grid
Y grid
six-digit grid
eight-digit grid (coordinate)
off-grid
designator grid for corrections
Army National Grid (ARNG)