Bidspirit auction | 1930s United Motors Service Compar-O-Meter

1930s United Motors Service Compar-O-Meter - Item SKU: 104842 This 1930's United Motors Service headlight tester would have measured the brightness of headlights at service stations. It features a metal tag reading ”United Motors Service” with a 1930's yellow convertible. Also marked on the gauge is a tag reading ”Compar-O-Meter - United Motors Service Inc. - The Hickok Electrical Instrument Co. - Cleveland, Ohio.” This Compar-O-Meter is missing the sticker that listed the scale conversion chart with instructions. Untested, but in very good display condition. 6.5” dia and 10.5” H