LIEBHERR S500 and S800 Gear Hobber: Detailed Operating Manual with tables of gears and differential change gears (includes a copy of the detailed sales catalogue for the similar L301). The manual is listed as for the S500 but contains many pages refering to the S800.

Cromwell (Smallpeice) Precision Lathe Manual. A compendium of all the available Cromwell literature (including a Sales and Specification catalogue for the 4-inch Mk.2) that includes Sectional Parts Drawings of the whole lathe (both English and Metric gearbox - and even listing the specification of the nuts, bolts and washers).