Original 1943 electrical trade vintage ad for HEWLETT-PACKARD COMPANY.  Main office and plant was located in Palo Alto, CA.

Manufacturers of Electrical Test Equipment.

Products include: Resistance-tuned Audio Oscillator - Model 200C shown. 

Just three dials on this audio oscillator: range selector, output voltage control and the main frequency dial. This simplicity of design makes for utmost speed in operation and yet there is no sacrifice in accuracy.  Of outstanding importance is the fact that no zero setting is required even during the first few minutes of operation. 

Has product images, descriptions, applications and specifications 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.