Original 1943 electrical trade vintage ad for JAMES G BIDDLE COMPANY.  Main office and plant was located at 1211-13 Arch Street, Philadelphia, PA.for

Manufacturers of Megger Insulation Tester.

The New Megger Insulation Tester, a worthy addition to the famous Megger family!

With our Philadelphia factory now in full production, your needs for "Megger" Insulation Testers can soon be met.  Our new US models are of the same general design and are similar in every way to our well-known "Meg" and "Super-Meg" Insulation Testers, except that they are housed in plastic molded cases instead of aluminum.

Has product images, descriptions, applications and specifications to provide extensive product details.

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.