Original oil and gas trade magazine vintage ad for SCHLUMBERGER WELL SURVEYING CORPORATION of Houston, TX. End of this line is just the beginning. When a truck rolls off this production line in the new Headquarters, it is dispatched to one of more than ninety field branches in the United States and Canada. Each unit is equipped to provide uniformly fine service under all conditions wherever it operates. This unique 1953 old one-page petroleum oilfield equipment magazine advertisement would display beautifully matted and framed.