Original 1939 industrial trade vintage catalog for the JAMES G BIDDLE COMPANY.  Main office and plant were located at 1211-1213 Arch Street, Philadelphia, PA.

Manufacturers of Electrical Testing and Speed Measuring Instruments. Scientific Apparatus.

Products include 'Megger' Insulation Testing Instruments, 'Megger' & 'Meg' Ground Testers, Other 'Megger' Instruments, 'Frahm' Vibrating-Reed Instruments, 'Frahm' Tachometers, 'Frahm' Frequency Meters, 'Jagabi' Speed Measuring Instruments and 'Jagabi' Rheostats, all are fully featured.

Has product images, description, applications and specifications to provide product details.

Unbound from a large rare 1939 Process Industries Catalog, this unique old one-page technical brochure would display beautifully matted and framed. Nice graphics. A fabulous addition to your retro electrical industrial equipment library.