| 摘要 |
A timing device including an internal motor which rotates a pointer on an elapsed time dial which indicates the time periods required for the performance of respective events and for indicating the differences between the time periods when each time period is successively indicated on a common dial. A drive mechanism is movable between two positions. In one position the single time dial is caused to indicate increments of time for performing a series of successive events while in the other position the same single dial is caused to indicate decrements of time of the previously recorded periods of time. A timing governor is provided as a part of the drive mechanism, so as to regulate the output speed of the drive mechanism.
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