MCKAY MACHINE CO., Serial No: S.O. 66-2237, Age: 1967 , SPECIFICATIONS: This Mill Will Convert Round Pipe into Square or Rectangle Pipe Examples are: 1-5/8" Round to 1-1/2" x 1" Rectangle, 1.900 " Round to 2" x 1" Rectangle, 2-3/8" Round to 2-1/4" x 1-3/8" Rectangle, 1-5/8" Round to 1-1/4" Square, 2-3/8" Round to 2" Square , Tube Size Range: 7/8" - 2-1/2", Wall Thickness: .072" - .220", Steel Material: S.A.E. 1050, Minimum Yield Stress: 75,000 PSI Max., Tensile Stress: 100,000 PSI , Entry Table w/Gravity Feed MILL:, 5-Driven Stands w/Horizontal and Vertical Pass in One Stand, Spindle Diameter: 4-1/2" (114.3 mm) x 1" (25.4 mm) Key, Horizontal Centers: 33" (838 mm), Pass Line Height: 40" (1016 mm), Vertical Adjustment: 13-1/8" (330 mm) - 17-7/8" (454 mm), Roll Space: 9" (228 mm)MOTOR & DRIVE: 1 - 200 HP, 1200 RPM, 2300 V - 3Ph 60 Cy AC Motor, 1 - 3 Speed Reducer with the Following Ratios: .873 to 1, 1.182 to 1, 1.727 to 1, 6 - Pinch Roll Worm Gear Drive Boxes, Mfg. D.O. JAMES, 1 - Coolant Pump & Motor w/36" x 38" Coolant Tank, 1 - Squaring Turkshead, 1 - Exit Table & Hand Stacker, Approximate Base Dimensions: 30' x 9' Wide