| 摘要 |
PURPOSE: To obtain safe data related to suitable starting time from a wrist watch by providing a clinometer provided with arrow marks for indicating inclined angle on a dial so that the arrow marks can be aligned with reference marks printed on the front protective glass of the dial plate. CONSTITUTION: A clinometer is provided on a dial plate 3 and the clinometer has a semicircular section 10 which is fitted to the rotating shaft of a hand 5 so that the section 10 can concentrically rotate around the shaft. The clinometer has arrow marks 12 for indicating inclined angle and, when the marks 12 are aligned with reference marks 11 printed on a glass member, the marks 12 indicate the inclined angle of a wrist watch 1. In addition, the watch 1 is provided with a timer 20 which accurately measure the time between a start signal and the actual starting time of the watch 1. |
