range finding apparatus

automated target detection, tracking, co-ordinate finding and interceptor guidance system

direction finding (DF)

fact-finding mission

height-finding radar

multifunctional radio control, direction finding and suppression system (portable) (MKRPP)

passive direction finding (PDF)

distance-finding station

wind-finding radar

automatic direction-finding equipment

direction-finding receiver

equisignal method (of direction finding)

position finding

short-wave radio DF station (direction finding)

elevation position finding

target finding

target finding device

radio position finding

celestial position finding

directional finding bearing

radio direction finding

radio direction finding chart

radio direction finding net

portable decontaminating apparatus

scuba (Self-Contained Underwater Breathing Apparatus)

self-contained breathing apparatus (SCBA)

acoustic detecting apparatus

boresight apparatus

undercover apparatus

undercover international apparatus

hose breathing apparatus

intelligence apparatus

time-interval apparatus