2 Free Images of Automatic Lamp Changers

S-2 Lamp Changer identical to one now used, develope by Coast Guard in 1940s for automated lamp replacement, with two 1000 Watt GE bulbs - Point Cabrillo Light Museum - California - DSC01924
self-published work2013 in caspar
US Navy 040813-N-5328N-004 Electrician's Mate 3rd Class Ryan Pritchard looks through the center of a fresnel lens while testing a new lamp to ensure it is working properly, at the lighthouse on board Naval Air Station (NA
first order fresnel lensesautomatic lamp changers
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