Sphere (Atlas) 10-inch LATHE: A complete data pack of information (including all-known literature) that covers all models, from the first to last. It includes: 1) A comprehensive Owner's Manual with over 248 pages that contains detailed operating instructions for the lathe and its accessories together with maintenance and lubrication instructions - it's probably the best instruction book ever produced by a lathe manufacturer. 2) Extensive thread-cutting instructions and dedicated charts from the larger 61-page "supplementary" Screwcutting Instruction Booklet.