Original electrical industry trade vintage catalog for HAN-KOR, INC. Main office and factory was located at 5005 Euclid Avenue, Cleveland, OH. Manufacturers of precision made commutators. Engineering demands accurately proportioned mica sleeves, segments and V-rings. True alignment in bar design, strong, tight assembly of steel spools and rings, and all other accuracy factors are stressed. Disbound from a large 1948 electrical construction materials book, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electric equipment library.