Delapena "Speedhone" Precision Honing Machines, manual versions, 275 Beam type, etc. Data Pack including: General Operating Manual with a data manual giving Recommended Honing Speeds and Honing Stone Pressures together with a large and useful collection (60 pages) of sales and Technical Specification Catalogues covering the types: "Speedhone" Junior; VHM/1, VHM1D, VHM/3C.