map reference code

attitude-and-heading reference system / attitude and heading reference system (AHRS)

runway reference code

aerodrome reference code

reference code

grid reference code

aerodrome reference code panel

map reference

map code

map coordinate code

planimetric map syn. line map

grid map / gridded map

grid reference box

grid reference system

guidance reference system

gyroscopic reference unit (GRU)

lay reference number

military grid reference system (MGRS)

NATO Master Cross Reference List (NMCRL) (logistics)

numbered reference position system

reference

reference diversion point

reference data

reference number (order / message / report)

stabilization reference package (SRP)

target reference point (TRP)

terms of reference (TOR)

World Geographic Reference System (WGRS); georef

Army doctrine reference publication (ADRP)

reference azimuth

fictitious reference point

real reference point

muzzle reference system (MRS)