Original vintage oil and gas magazine ad,  EATON MANUFACTURING COMPANY, Axle Division, Cleveland, OH.  Motor Truck Axles.  Front Axles, Tandem Drive Axles, Single Reduction Axles, Double Reduction Axles, 2 speed Axles.

Eaton Products:  Sodium Cooled, Poppet, and Free Valves; Tappets; Hydraulic Valve Lifters; Valve Seat Inserts; Jet Engine Parts; Rotor Pumps; Motor Truck Axles; Permanent Mold Gray Iron Castings; Heater Defroster Units; Snap Rings Springtites; Spring Washers; Cold Drawn Steel; Stampings; Leaf and Coil Springs; Dynamatic Drives, Brakes, Dynamometers.  Old 1955 petroleum industry advertisement.

approximate size  9  x 12 inches.