The machinist and tool maker's instructor, containing an easy method of calculating and laying out difficult work in the machine shop ..
A shop manual by Edward Genung, published in New York in 1896, teaching machinists and tool makers to calculate and lay out gears, tapers, and angled cuts. The 67 plates are line diagrams: circles, hatched section views, dashed construction lines, degree arcs and lettered points, drawn in black on tanned paper with hand-lettered figure numbers.
