16mm acetate education educational entertaining entertainment equipment feed films gauge length light long metal movies perforated perforation plastic plastics projection projectionist projector reels screen screening showing Sizes spools standard width wind winding air amount anasthesia gas anesthesia controller flow flowmeter gage gas hospital illness instrument laughing gas medical medical equipment messure nitrous oxide operation oxygen oxygene regulater rotameter scale sleep tool volumeter work Aerospace Industry Air Vehicle airplane autopilot boeing cockpit Commercial Airplane computer control control panel dashboard flying illuminated indoors Inside Of jet Lighting Equipment. liquid-crystal display machine Mode of Transport panel pilot Piloting speedometer switch technology throttle Vehicle Interior Lighting Equipment antique autumn cold dark drizzle drizzly fall fog gray historic history mist misty preservation rainy seansons shine train trains winter boiler buffers engine England english fender Great Britain iron kent machinery nostalgia nostalgic power rail railway steam steel elements piston rods wheels