Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise
A ten-volume self-study manual on electricity by Nehemiah Hawkins, published by Theo. Audel & Co. in New York in 1914 for working engineers, electricians and students. The line engravings diagram magnetic fields, armatures and eddy currents with hatched pole pieces, arrowed flux paths and cutaway coils, giving designers a stock of mechanical cross-sections, directional arrows and dense engraved shading.
