The Clausing 15VS is a manually-operated horizontal engine lathe designed for precision turning and threading applications. This two-axis machine features a robust single spindle with a maximum turning diameter of 9.500 inches and an extended turning length capacity of up to 50.000 inches. The spindle operates at a maximum speed of 2,500 RPM with 10 horsepower output, delivering consistent power for various cutting operations. The machine accommodates a 15.750-inch swing over the bed, providing generous workpiece clearance for large-diameter stock. The 15VS utilizes infinitely variable speed control across three ranges (15-300 RPM, 35-830 RPM, and 110-2,500 RPM), enabling optimal spindle speeds for different materials and cutting conditions. Its slide-type tool carrier accommodates a single cutting tool, with a cross-slide travel of 9.800 inches and longitudinal feed capability spanning 0.0014 to 0.048 inches per revolution. The machine offers comprehensive threading capabilities, supporting 56 inch pitches, 51 metric pitches, and 20 diametral pitches. Standard features include a D1-6 camlock spindle nose with 4MT taper, a tailstock with 5.5-inch quill travel, and precision feed systems for both longitudinal and cross-slide operations. The machine's hardened and ground headstock gears ensure durability and accuracy across extended production runs. With its combination of capacity, power, and precision control systems, the 15VS serves as an efficient workhorse for job shops and production environments requiring reliable turning, boring, and threading operations.