Left-hand Frog Small 320×61 Medium 640×121 Large 1024×194 Download Tiff Original 2918×553 | (317.6 KB) Description A left-hand frog, or overhead switch. Switches are used when trolley wires branch off with another wire, like at intersections. Keywords left-hand frog, overhead switches, suspension frog, trolley suspension, what does a left-hand frog look like, what does a left-hand switch look like, what is a left-hand frog, what is a left-hand frog used for, what is a left-hand switch, what is a left-hand switch used for Galleries Rail Transportation Source: International Correspondence Schools A Textbook on Electric Lighting and Railways (Scranton, PA: International Textbook Company, 1901) Courtesy the private collection of Roy Winkelman
