BALDEAGLE

Accelerometers; Binoculars; Hygrometers; Rangefinders; Theodolites; Compasses for measuring; Electronic heliographic apparatus for recording the duration and intensity of sunshine; Fibre optic periscopes; Flashlights for use in photography; Light dimmers; Marine depth finders; Sirens for vehicles; Temperature sensors; Videocameras; Walkie-talkies