Holbrook Model B 13, 17 and 21 Manual
Holbrook Model B No. 13, No. 17 and No. 21 Toolroom Lathes: Operator's Instruction Manuals plus Lubrication data, screwcutting charts and electrical diagrams. Includes a comprehensive Technical Sales and Specification and Accessories Catalogue that clearly explains the machine's functions and capabilities.
Dean Smith and Grace 18 and 21 Manual
Dean Smith and Grace Type 18 and 21 Lathes: Operator's Instruction and basic Maintenance Manual with a copy of the detailed and well-illustrated all-models maker's Sales, Technical Specification Catalogue for the same era. This lathe was often also marked as a Model TYpe with its between-centres capacity e.g. 21-30, 21-36, 21-48, etc.
Delta Rockwell Milling Machines Manual & Catalogs
Delta Rockwell Millers: Vertical, Horizontal and the Horizontal with a Vertical Head. Combined Manual for the Models 21-100 Horizontal, 21-120 vertical and 21-122 Combination Horizontal and Vertical. Also covers the 52-020 and 21-820 versions - but not the latter's variable-speed table-drive system.