PGM-Staehely SH200 Gear Hobbing Machine (also marketed as Red-Ring). Operator's Instructions.

Red-Ring 5-AC Gear generator: Operating Instructions and Formulae Booklet.

Red-Ring 7-HD Gear Hobbing Machine: Operating Instructions.

Red-Ring G.C.U. Gear Shaving Machine. Operator's Instruction and Maintenance Manual with Parts as Sectional Drawings. Late, fully-revised Edition

Red-Ring G.C.I. 8", 12" and 18" Gear Finishing Machine. Operator's Manual with useful sectional drawings.

Red-Ring G.C.P. 24" Traduzione Libro Istruzione Sbarbatrice GCP 24" (Operator's Manual and Parts), Italian text.

Red-Ring PGC Gear Chamfering and deburring machine. Operator's Manual and Service Instructions with Parts as Engineering Drawings.

Red-Ring SF-900 CBC Gear Grinder. Maintenance Manual with Parts as General Engineering Drawings.

Red-Ring TRP-12" Tooth Rounder and Pointer. Operator's Manual and Service Parts as Exploded Component Drawings.

"Modern Methods of Gear Manufacture" by Red-Ring - A comprehensive textbook that explains design, calculations, materials, machining, forming, finishing, inspection and specialised machinery.