| 摘要 |
The progress meter provides a progress hand which is moved by a progress shaft, concentric about the conventional hour hand shaft, at some predetermined rate which is some fraction of a revolution per hour. A dial is superimposed on the time piece face graduated in selective rate of progress in correspondence with a predetermined speed reduction ratio between a conventional transmission element axis (in chain of transmission increments with the number of graduations around the dial determined by a built-in reduction ratio between a gear selected for installation on a conventional transmission element and a gear on the progress shaft. Also, adaptation is made whereby the conventional time and alarm setting device may be employed selectively to set the progress hand while overriding the clutch connection normally operative to carry drive to the progress hand from conventional time piece sources.
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