划线规的脚为等宽、等厚的两直条脚，并刻有等分刻度及直尺刻度。
The feet of the marking device are two aequilate and isopachous straight stripe feet, and the evenly divided scale and the ruler scale are engraved on the feet.
任意角任意等分仪由渐开线板（3），T形线尺（2）和等分刻度线板（1）三个等分角度的零件及辅助零件组成。
The arbitrary angle arbitrarily bisector is composed of an involute board (3), a T-shaped line ruler (2), three equal division angle parts of an evenly divided line plate (1), and an auxiliary part.
但由于橡皮筋的伸长与所受外力不成正比，故不能等分地进行刻度。
But because the extension of the rubber band is not directly proportional to the external force, the scale of the rubber band can not be divided equally.
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