L100 Engineers Black Book Engineers Black Book contains a wealth of up-to-date, useful, information within over 160 matt laminated grease proof pages. It is ideal for engineers, trades people, apprentices, machine shops, tool rooms and technical colleges. Includes a bonus drill point sharpening gauge 164 Pages of: Tables Standards Illustrations Grinding wheels Conversion factors Tapers Lubricants-coolants Bolts & nuts Spur gear calculations Tungsten carbide Plastics Sharpening information G Codes Hardening & tempering Formulae Geometrical construction Weights of metal Engineering drawing standards Tolerances Keys & keyways Tapping drill sizes Speeds & feeds Equivalent charts