Original 1921 electrical trade vintage magazine ad for JOHNS-MANVILLE, INC. Main office was located on Madison Avenue at East 41st Street, New York, NY.

Manufacturers of Noark Protective Devices.  Making Safety Safe!

Products include the 'Noark' Primary Box and the 'Noark' High Potential Fuses, both are fully featured.

Noark Protective Devices are safe for your employees to work with and to work near, as well as to protect your electrical apparatus. Correct design, careful manufacture and proper operation under all service conditions are the reason why the Noark High Potential Fuse ensures absolute safety for your transformers and your lineman.  Many Public Utilities are using the Noark Primary Box and High Potential Fuse in place of a more expensive oil switch or circuit breaker. 

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

Unbound from a rare 1921 Electrical World magazine, this unique old two-page gatefold technical magazine advertisement would display beautifully matted and framed. Nice graphics. A fabulous addition to your retro electrical industry library.  Due to scanner limitations, the right edge appears clipped. The actual print is complete.