There were many models of Mars Lights, that used several methods to oscillate the beam. Sometimes the entire lamp and assembly were moved; on other models, the reflector behind the bulb was rotated. The beam was u… 展开

Many railroads used Mars lights on a variety of locomotives, both steam and diesel, from 1930s until 1990s. Prominent users were railroads such as the Chicago and North Western, Southern Pacific, and Denver and Rio … 展开