| 摘要 |
<p>Two concentric disks (1,2) bear peripheral numerals which enable them to indicate twelve hours through a dial plate slot. An adjacent dial plate slot shows peripheral numbers on two non concentric disks (3,4) to give a complete numerical time display. The hour disks are driven through spring loaded rockers and the minute disks through instantaneous step cams. Further disks (27,49,51) show am/pm, day and moon position</p> |
