| 73 / | HD | MEASURING AND TESTING |
| 570 | DF | VIBRATION {10} |
| 662 | DF | .~ Vibrator {4} |
| 663 | ![]() | .~.~ Table, platform, or other support {5} |
| 664 | DF | .~.~.~> Circuitry |
| 665 | DF | .~.~.~> Having fluid bearing or fluid pressure actuated |
| 666 | DF | .~.~.~> Having spring support |
| 667 | DF | .~.~.~> Eccentrically vibrated |
| 668 | DF | .~.~.~> Electromagnetically vibrated |