Original 1939 flooring trade vintage catalog for the DRAVO CORPORATION. (Machinery Division). Main office was located in the Dravo Building, Pittsburgh, PA. (Manufactured by The Tri-Lok Company, Pittsburgh, PA).

Manufacturers of Tri-Lok Open Steel Flooring, Armoring and Safety Steps, all are fully featured.

Has product images, description, applications and specifications chart to provide product details.

Unbound from a large rare 1939 Process Industries Catalog, this unique old one-page technical brochure would display beautifully matted and framed. Nice graphics. A fabulous addition to your retro grating equipment library.