E. F. Johnson Company Product. Inductor. Material: steatite, metal. Size: 6" W. x 10 3/8" L. x 6" D. Description: gray metal, white steeatite and copper - type VN Variable Inductor. Museum label black on silver side of long frame member: "Type VN - 1935." I.D. plate on end brace: "E.F. Johnson Company, Waseca, Minnesota, U.S.A. Type 2826N8, Serial 13693." Oxidation.