Big sale Goniometer 180 Degree Protractor Angle Finder Miter Gauge Arm Measuring Ruler

1、The combination of ruler and protractor makes it can measure length or angle 2、Used to draw radial lines. setting bevels and transferring angles. 3、Ideal for engineers. craft persons. model makers. etc. 4、Made of high quality ABS plastic. 5、Double graduation from 0 to 180°.