Original oil and gas trade magazine vintage ad for AERO SERVICE CORPORATION. Main office was located in Philadelphia, PA.. Explore over jungle or desert with Radan-Guided aerial surveys. Maps, photos not required. Costs cut in half with airborne magnetometer surveys. The tested new radar Doppler aid to navigation operates without ground stations. The first use of the new system over 40,000 square miles of the Libyan desert clearly established its accuracy and utility. This unique 1959 old petroleum oilfield equipment magazine advertisement would display beautifully matted and framed.