| 摘要 |
PURPOSE:To prevent fault and malfunction with a simple constitution by changing over the input functions through a push-button type switch by a switching mechanism interlocking to the pull-out position of a crown. CONSTITUTION:An electrical counting means for second correction consisting of a counter 31 which becomes the content synchronized to the indication content of the second hand 3 when it receives the second correction signal and a counter 32 which becomes a second correction standard. According to the comparison of the contents of the counters 31 and 32, the driving stage of a step motor 29 is modulated, whereby correction of the second hand 3 is accomplished. A push-button type switch S which is provided with a function for inputting the control signal for synchronizing the content of the counting means to the indication content of the second hand 3 and a function for inputting the second correction signal to the counting means is provided and arrangement is so made that both input functions by S are changed over by the switching mechanism interlocking to the pull-out position of a crown 6. |
