REISHAUER NZA (and OZA_ Gear Grinding Machine. Operating Manual with Parts Manual as Sectional Drawings (with 13 of the drawings enlarged to A3 for better clarity). Includes a 40-page copy of the maker's beautifully-produced, detailed and well-illustrated sales and technical specification catalogue. The NZA and OZA were identical save for the OZA being cheaper as it was built without profiling equipment. The makers suggested that if a gear maker could employ at least three OZA machines and one separate Type AM profiling and dressing machine, it would be a less costly investment than three NZA models.