This calculagraph is provided with the function of show the slow time and time, also it can meet the need of the various timing works.

此计时器拥有显示标准时间和计时功能，也可以满足各种不同计时工作的需要。

The high precision calculagraph is the key equipment in the orientation precision test system of artillery scout and checkout of UAVs.

高精度计时器是无人机定位精度检测系统中的关键设备。