This manual is intended for use in training persons whose vocations involve technical drawing to use the metric system of measurement. It could be used in a short course designed for that purpose or for individual study. The manual begins with a brief discussion of the rationale for conversion to the metric system. It then provides a straightforward discussion of the metric units for length, area, volume, mass, and temperature. The remainder of the text is devoted to drafting in the metric system. Topics include conversion from inch drawings to metric drawings, tolerance conversions, and dual dimensioning. Sample specifications and drawings are provided for many objects (screw threads, sprockets, adaptors, steel casing, etc.). Many questions appear throughout the manual; answers are provided in an appendix. (SD)