REIDEN Millers Horizontal Millers HF-20 and HF-30. Operating and Servicing Manual & Catalogue REIDEN Miller HF-20 and HF-30 Horizontal Millers. Operating and Servicing Manual. Includes a copy of the maker's Sales and Specification and Accessories Catalogue. Manufacturers: Reiden Models: HF-20 HF-30 Contents: Operators Manual Maintenance Manual Catalog