Slide Rule

计算尺，是一种模拟计算工具，主要在电子计算器普及之前用于复杂的数学运算。它通常由几条刻有对数刻度的长条组成，其中至少有一条是可以滑动的，称为滑尺。使用者通过滑动这些尺条，并使用游标对准刻度，以此来进行运算。Slide rule is an analog calculation tool that was mainly used for complex mathematical operations before the widespread use of electronic calculators. It usually consists of several long strips engraved with a logarithmic scale, at least one of which is sliding, called a slide rule. The user does the math by sliding the rulers and aligning them with the cursors. 在这个模型中，可以使用皮筋或细线来制作游标。In this model, a cursor can be made using a rubber band or a thin line.