A course in mechanical drawing for evening schools and self-instruction
A mechanical drawing manual by Louis Rouillion, published by the Prang Educational Company in Boston and New York in 1896 for evening-school students and self-taught draftsmen. Plates show sectioned pulleys, bolts and nuts, lathe headstock parts and sheet-metal development layouts, all in line with hatching, dimension arrows and lettered construction points designers can lift as diagram vocabulary.
