depth finder (sounder)

depth sounder

echo depth finder

echo sounder

special sensor microwave imager sounder

azimuth finder

height finder radar

high frequency direction finder

laser range finder (LRF)

position finder

range finder / rangefinder (RF)

AN/TPQ (Army-Navy [Marines] Transportable Position finder [radar] Q [counterbattery])

laser target-designator and range-finder switching-on (cutting-in) time tabular value

auditory direction finder

azimuth-type range finder

depression position finder

dip range finder

commanding officer's position finder

automatic direction finder (ADF)

radio direction finder

accurate position finder

automatic direction finder

height-finder operator

range finder operator

vertical base position finder

vertical base range finder

split field range finder

range finder

gun range finder operator

electronic range finder

laser range finder

radiosonde tracking radio direction finder

radiotelephone direction finder