TXYFYPPlastic Protractor,Mitre Saw Protractor,Angle Finder Protractor Plastic Pro-Site Protractor Digital Protractor Digital Inclinometer Angle Measuring Tool for Roofing Engineering Dependable

Your browser does not support HTML5 video.  Loose and floppy and no way to lock it mean that it's almost impossible to read accurately. Save your money and buy something else as this is total junk.