Original 1941 industrial trade vintage catalog for the CHICAGO WATCHCLOCK CORPORATION.  Main office and plant was located at 1524 South Wabash Avenue, Chicago, IL.

Manufacturers of Chicago Watchman's Clock System.

It consists of clock, leather carrying case, required complement of stations with seals and a years supply of dial record sheets. The system is so devised that a clock must be carried by the watchman on his regular rounds of stated intervals to the patrol stations, each station having a key which fits the clock. When this key is inserted and turned, it registers on a paper dial within the clock, an embossed figure, the exact time of the registry. Keys are chained and sealed at the various stations, making it impossible to remove them without detection. Clock, while in possession of the watchman, is locked and equipped with a tell-tail device which records exact time of opening and closing of the clock upon the paper dial.

Has numerous product images, description and applications provide product details.

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