Pratt and Whitney Jig Borers No.1, No.1A and No.2. Detailed Sales, Technical Specification & Accessories Catalog with lots of interesting information about the design and construction, hints and tips on how to use the machines and employ them most effectively, and stories of various tests and demonstrations undertaken. 36 pages.

Moore No. 1 Jig Borer - the first version made. This had open V-belt drive over 5-step pulleys; to the top rear of the main column a 4-spoke capstan handwheel and to the right-hand side of the elevating head, a 4-spoke full-cycle handwheel. Operator's Instruction and Maintenance Manual with Parts as Photographic Plates.

Richards (George Richards) No. 1 Horizontal Boring Machine. A model from the 1930s. Operating Instructions.