Original 1966 heating trade vintage catalog for the ARMSTRONG MACHINE WORKS.  Main office and plant were located in Three Rivers, MI.

Manufacturers of Armstrong Dry Steam Humidifiers. 'With Steam Jacketed Distribution Manifolds for Air Handling Systems'.

Has product images, detailed illustrations, description, applications and specifications charts to provide product info.

Unbound from a large rare 1966 Architectural Catalog, this unique old four-page technical brochure would display beautifully matted and framed. Nice cover graphics. A fabulous addition to your retro heating equipment library.