American Scientific 231 OcToser 4, 1902. … Write for our Free Illustrated Book. tion coil guaranteed to give a 1-inch spark. * CAN I BECOME AN ELEC- \Q4 HAND GAS and GASOLINE ENGINES FNGINEER’S | LICENSE What amount of current will be required to Save 30 to 50 per cent. Second hand engines in TRICAL ENGINEER ?”’ make the 1-inch spark, and…
Internet Archive · Public domain (published before 1931). Free to use for anything.