这个装置的正面有个刻度盘，盘上至少有三根指针，一根用来指示日期，其余两根用来表示太阳和月亮的位置。
A dial on the front of the device probably carried at least three hands, one indicating the date and the other two indicating the positions of the Sun and the Moon.
当刻度指示器指向规定的位置，放开脚踏板。
Release the Foot Switch when the Calibration Indicator reaches its set position.
调水阀盖上的刻度盖标有刻度，配合标准杆，就可以知道每次调水阀盖所调的位置。
As a scale cover on the water regulating valve cover is marked with scales, by matching with a standard rod, the regulated position of the water regulating valve cover at each time can be known.
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