умовний меридіан
grid zone / grid-zone
grid zone designation / Grid Zone Designator
JAN grid / Joint Army-Navy grid
prime meridian (PM)
celestial meridian
north reference direction of geographical meridian
transverse meridian
local meridian
meridian
prime meridian
bearing grid angle
Global Information Grid (GIG)
grid
grid azimuth
grid bearing
grid convergence
grid convergence factor
grid coordinate system
grid coordinates
grid interval
grid line
grid magnetic angle
grid north (GN)
grid note
grid reference
grid reference box
grid reference system
grid system of communications
grid variation
interval of grid lines
map grid
mil grid