下载 APKPure App
可在安卓获取Physics Toolbox Ruler的历史版本
这个程序是一个数字标尺，以允许用户以测量在厘米或在一个对象。
This app is a digital ruler to allow the user to measure an object in centimeters or inches. Simply place the object to the side of the screen and use two fingers to locate the endpoints of the object. A digital readout determines the vertical displacement between the two endpoints.