注意：在垂直轴上，两条线使用了不同的刻度，并且工资刻度的起始点不是零。
Note that the two lines use different scales, shown on the vertical axes, and that the scale for wages does not start at zero.
支架上的垂直分层可设有刻度， 层隔可等距。
Vertical layer of the support is provided with scale and divisions are arranged in equidistance.
两个卡边上都有刻度并垂直于直尺。
Both the clamping edges are provided with scales and are perpendicular to the ruler.
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