PATENTED MEASURING TECHNOLOGY -- Ruler and protractor combination for easy measuring inside and outside angles.
BLACK RULER&WHITE SCALES -- This new colors make it easy to read length measurement.
HIGH ACCURACY -- Accuracy of this protractor is ±0.3 degree. It is a good choice for most projects like woodworking, crown molding and daily use. Folded length: about 7.5 inch/220mm.Total length 400mm.
LOCKING FUNCTION -- For read it easily, GemRed angle finder could be locked at any angle.
