Flight simulators; flight simulators for aircraft; flight simulators for space vehicles; gunnery training simulator apparatus; image making devices for simulators; instrumentation simulators; medical simulators (teaching aids); simulators; simulators for leisure installations; simulators for simulating the effect of earthquakes; simulators for simulating the effect of nuclear explosions; simulators for simulating the effect of storms; simulators for simulating the effect of waves; simulators for simulating the effect of wind; simulators for simulating the operation of aircraft; simulators for simulating the operation of land vehicles; simulators for simulating the operation of motor vehicles; simulators for simulating the operation of space vehicles; simulators for simulating the operation of watercraft; simulators for simulating the operation of weapons; simulators for the steering and control of vehicles; simulators for training operators in weapons systems control; simulators for training personnel in rifle marksmanship; simulators for training personnel in the driving of vehicles; simulators for training personnel in the flying of aircraft; simulators for training personnel in the flying of space vehicles; simulators for training personnel in the ground control of aircraft; simulators for training personnel in the operation of aircraft; simulators for training personnel in the operation of land vehicles; simulators for training personnel in the operation of motor vehicles; simulators for training personnel in the operation of watercraft; simulators for training personnel in the operation of weapons; simulators incorporating digital computers for industrial training purposes; training simulators for civil aviation purposes; transmitter simulators; weapon simulators; weapons simulators; amusement apparatus for use with television screens; anti-glare filter screens for cathode ray tubes; anti-glare screens; apparatus for transmitting film images onto television screens; computer controlled installations of liquid crystal display screens; computer screens; electric or electronic control screens; electric or electronic display screens; film screens; filter screens for computer screens; flat screens for electronic data processing apparatus; fluorescent screens; hand held protective screens for use by industrial workers; image screens; interactive graphics screens; liquid crystal display screens; monitor screens; motion picture screens; optical viewing screens; photographic projection screens; photographic screens; projection screens; projector screens; screens for cinematographic projection; screens for photographic projection; screens for use in photography; screens for use with computers; screens for use with visual display units; tactile screens (electronic); television screens; touch sensitive electronic screens; video display screens; video screens; visual display screens