The practical draughtsman's book of industrial design, and machinist's and engineer's drawing companion; forming a complete course of mechanical, engineering, and architectural drawing
A mechanical drawing manual by the Armengauds and Jules Amouroux, translated by William Johnson and issued in Philadelphia by H. C. Baird in 1871 for apprentice draughtsmen, machinists, and engineers. The 277 plates combine tinted sections and elevations with fine construction lines, gear-tooth geometry, and projection exercises, giving designers precise line diagrams, hatched machine parts, and layered technical grids.
