Mechanical Drafting: Revised in 1915. E-book. Formato PDF - 9780243661817

Mechanical Drafting: Revised in 1915. E-book. Formato PDF. The above principles were followed by first design ing a very ?exible course in drafting, substituting draw ings of machine parts for the conventional geometrical figures. The work was arranged into definite groups, according to subject, each group being scheduled for a definite amount of time. Second, the text was so ar ranged that section, lesson or chapter one, gave all information necessary for the work included in group one, etc.