visible horizon

artificial horizon (gyro horizon/ attitude indicator)

artificial horizon / attitude indicator, gyro-horizon

attitude indicator / artificial horizon, gyro-horizon

gyro-horizon / artificial horizon, attitude indicator

visible presence

visible tear gas

visible gate

visible light

determine rapidly the visible areas of irradiated object

effect for inflowing of electromagnetic field over the visible parts of object

optically visible points

visible areas of irradiated object

visible deterrent

visible infrared flashlight

high frequency over-the-horizon (HF OTH) radar

horizon

horizon distance

Horizon's Lord

over-the-horizon forces

over-the-horizon ground-based radar

over-the-horizon range

true horizon

horizon check

beyond-the-horizon communication

celestial horizon

over-the-horizon communication

remote indicating automatic gyro horizon

gyro horizon

horizon index

radar horizon

radio horizon

beyond-the-horizon surveillance