| 310 / | HD | ELECTRICAL GENERATOR OR MOTOR STRUCTURE |
| 10 | DF | DYNAMOELECTRIC {5} |
| 40 R | DF | .~ Rotary {28} |
| 66 | DF | .~.~ With other elements {7} |
| 68 R | DF | .~.~.~ Electric circuit elements {9} |
| 69 | ![]() | .~.~.~.~ Shaft-driven switch (e.g., blasting generators) {1} |
| 70 R | DF | .~.~.~.~.~> Distributor or timer (e.g., ignition magnetos) {1} |