Velocimetry, velocity measurement with a laser gun, RIEGEL FG21-P

appliance appliances baden baden wuerttemberg check checking checks control controlling controls day daylight daytime during enforcement engineering europe european exterior exteriors federal fg21 fg21 p frg german germany gun inspect inspecting inspection inspections inspects instrument instruments laser limit measure measurement measurements measures measuring nobody of outdoor photo photos police radar republic riegel road shot shots southern speed technic technical technology the tool tools traffic velocimetry velocimetry velocity with wuerttemberg