Original 1943 electrical trade vintage ad for OHIO BRASS COMPANY.  Main office and plant was located in Mansfield, OH

Manufacturers of Power Line Insulators.

It's No Trick To Make A Strong Insulator.

Let's not over-emphasize the matter of brute strength in suspension insulators. It's no great accomplishment to build a strong insulator, or everybody wouldn't be doing it. The really important side of the strength story is the ability to build insulators to a definite strength standard, and then not miss that standard in any number of times.  In 1978, Hubbell, Inc purchased the Ohio Brass Company.

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.