TOS SN55A, SN63A, SN71A, SN-55B, SN-63B and SN-71B Lathes: Parts Manual as Sectional Drawings with Electrical Schematics and reproductions of the (frequently damaged or missing) Screwcutting Charts.
TOS SN-55B, SN-63B and SN-71B Lathes: Large Operation, Maintenance and a Parts Manual as clear sectional drawings The Operation Manual has the annotated links that point to drawings in the Parts Manual.