Original 1954 Oil and Gas trade vintage catalog for the KEYSTONE DEVELOPMENT CORPORATION.  Main office and plant were located at 2813 Westheimer Road, Houston, TX.

Manufacturers of the Sonolog Acoustic Well Sounder.

The new, improved Sonolog is a precision instrument for measuring the fluid level in producing oil wells by the acoustic method, for the purpose of determining bottom hole pressure, productivity index and for the analysis of operating difficulties, such as defective pump or tubing. Sonolog provides two entirely separate recording channels, operating simultaneously at different sensitivities and with different characteristics. This aids greatly in securing reliable data. Used by leading oil companies in all parts of the world.

Has product images, illustration, description, application and specifications to provide product details.

Unbound from a large rare 1954-1955 Composite Catalog, this unique old one-page technical brochure would display beautifully matted and framed. Nice graphics. A fabulous addition to your retro oilfield petroleum industry library.