Roller Parallel Ruler

介绍：它可以让我们方便快速地画出多条平行线。在移动时，滚轮上的刻度对准框架的缺口，可以清晰地知道你移动了多长，以便你画出任意间隔的平行线。Introduction：It help us to easily and quickly draw multiple parallel lines.When moving, align the scale on the roller with the, which can clearly indicate how long you have moved, so that you can draw parallel lines at any interval. 打印注意事项：1.分为两个部分。框架部分建议按照高度双色打印以便更好地看清楚刻度。2.打印完成后，剪两小段1.75mm的耗材，像图中这样插入两边的孔洞充当轴承。Printing Attention:1. Divided into two parts. It is recommended to print the framework in two colors according to the