Original 1941 industrial trade vintage catalog for the ROCKWOOD SPRINKLER COMPANY.  Main office and plant was located at 42 Harlow Street, Worcester, MA.

Manufacturers of Rockwood Waterfog Fire Protection Systems.

WATERFOG is the most potent and practical all around fire extinguisher now available. It is plentiful, highly portable, economical and causes less damage to property surrounding a fire than most other extinguishing agents. Breaking up water into extremely fine particles by the impingement of two streams, creates Rockford Waterfog. Water in this form attains its most effective extinguishing qualities. Waterfog extinguishes with great speed using a minimum amount of water largely because of its combined cooling and smothering action. Rockford Waterfog extinguishes with remarkable speed fires in oils, kerosene, mineral spirits and most other highly flammable liquids and materials. It is very effective on other types of fires. 

Has numerous product images, description, application and specifications provide product details.

Unbound from a large rare 1941 Industrial Catalog, this unique old five-page technical brochure would display beautifully matted and framed. Nice graphics. A fabulous addition to your retro industry library. Pages are loose.