Original oil and gas trade magazine vintage ad for CHICAGO PNEUMATIC TOOL COMPANY. Main office and factory was located at 5000 US Route 81 South, Fort Worth, TX. The Combination of Long Staying Power, Deep Penetrating Action and Fast Cutting speeds makes CP Three Cone Rock Bits the Favorite of Drilling Rig Operators Everywhere. This unique 1955 old oilfield petroleum drilling industry equipment magazine advertisement would look sensational matted and framed. On the reverse side is an ad for PRECISION RADIATION INSTRUMENTS, INC. of Los Angeles, CA. Are Exploration Barriers Crumbling? Royal Scintillator. Unique 1955 petroleum industry equipment magazine advertisement. Approximate page size 9 x 12 inches.