Crx4Chrome插件下载 
A browser rule, opening and closing by “Alt + H”, “click” to measuring the distance between two points， “Ctrl/Command + click” to Multiple choice, “shift+click” to horizontal or vertical.My email: clpliuping@126.com;
一个测量工具，使用alt+H来控制开关，通过点击来测量两点之间的距离，按住shift键点击实现垂直，水平，斜角45度规整线段效果，多点测量可按住ctrl/command键不放，点击待测点实现，有任何问题可邮件联系我：clpliuping@126.com
