The spotlight dates back to the 1930s and was likely used on a French Navy battleship. By moving slatted louvers the signalman sent short and longer spaced rays of light that could be read by trained sailors in the distance. Morse code uses long and short elements and combinations to convey a message. The elements making up the code were formed by sounds, marks and pulses of varying length. Created in the 1840s Morse code was in use for more than a century and a half. The famous S.O.S. sent by ships in distress (as on the Titanic) was sent by Morse code. Key Features: Lamp housing made of heavy recycled aircraft aluminumSolis brass hardware and partsAdjustable louvers allow light to be regulatedNickel plated, machined steel and brass industrial look tripodCog and wheel gear mechanic adjust height of lamp headFinish: ChromeHeight: 65"Length: 34¾"Width: 34¾"