Rockbestos : asbestos-covered wires and cables for every service : manufactured by Marlin-Rockwell Corporation.
A 1919 trade catalogue from the Marlin-Rockwell Corporation promoting Rockbestos asbestos-covered wires and cables to electrical contractors, engineers and specifiers in the United States. Each plate frames a single short length of wire — black, silver-braided or orange-cored — horizontally on a blue-grey mount inside a grey border with small silver scroll ornaments, giving designers ready-made specimen-in-frame layouts, muted industrial color pairings and repeatable decorative corner motifs.
