Original 1943 electrical trade vintage ad for OKONITE-CALLENDER CABLE COMPANY.  (Hazard Insulated Wire Works Division). Main office and plant was located in Passaic, NJ.

Manufacturers of Paper Insulated Power Cables.

Uniform Lead Sheath Thickness for Greater Strength and Longer Cable Life.

Lead Sheaths, which are otherwise free from structural defects, will fail ultimately at the thinnest point and cause cable failures. The Okonite-Callender electric concentricity gauge measures the slightest deviation in sheath thickness throughout the length, at top, bottom and either side, thus permitting immediate adjustment of the lead press to keep the sheath uniform.

Unbound from a 1943 electrical engineering magazine, this unique old one-page advertisement would display beautifully matted and framed. Nice graphics. World War 2 propaganda. A fabulous addition to your retro electrical library.