Original concrete trade vintage catalog for THE STANDARD SCALE & SUPPLY COMPANY, was located at 1631 Liberty Avenue, Pittsburgh, PA. Manufacturers of concrete mixers. S.S.S., special road and street paving mixer. Chart with sizes, capacities and weights. The most important feature is the patented low-charging design which enables the drum to be charged from the low platform that is attached to the machine, and portable with the outfit. Disbound from a large 1916 engineering book, this unique two page technical specifications brochure would display beautifully matted and framed. Contains a small amount of residual glue on edge.