| 368 / | HD | HOROLOGY: TIME MEASURING SYSTEMS OR DEVICES |
| 89 | DF | TIME INTERVAL {6} |
| 107 | DF | .~ Electrical or electromechanical {3} |
| 113 | ![]() | .~.~ Stop time type {5} |
| 114 | DF | .~.~.~> With physically changeable element |
| 115 | DF | .~.~.~> Including cathode-ray tube oscilloscope {2} |
| 118 | DF | .~.~.~> Including time base oscillator {1} |
| 120 | DF | .~.~.~> Including delay means |
| 121 | DF | .~.~.~> Including time indicating means actuated by voltage or electrical charge {2} |