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 |