A (pair of) drawing compass(es). The rotation point of the legs are set at the screw points so resizing them should be very easy with Inkscape 绘图 技术 体系结构 绘制中的罗盘
A (pair of) drawing compass(es). Similar to the other in my collection except this one includes the adjusting wheel. 学校 教育 绘图 指南针 2
A sketch of a technical drawing pencil. itomatOS Linux for 2D Creativity http://itomatos.flotsm.com 铅笔 起草 技术 技术绘图铅笔
The same as my other blue ruler, however in the first one the numbers are left as fonts, but in this one they are converted to curves. 绘图 测量 学校 蓝色标尺 2