| 368 / | HD | HOROLOGY: TIME MEASURING SYSTEMS OR DEVICES |
| 89 | DF | TIME INTERVAL {6} |
| 107 | DF | .~ Electrical or electromechanical {3} |
| 110 | ![]() | .~.~ Mechanically actuated stop time type {2} |
| 111 | DF | .~.~.~> With electronic memory storage |
| 112 | DF | .~.~.~> With reset means |