This durable Blue Right™ Woodworker's Protractor is twice as thick as a standard protractor and will give you years of use on even the toughest of job sites. Features a removable fence that lets you set the protractor flush against your work piece for accurate measuring, marking and projecting angles, or remove the fence and use it as a standard protractor. Convenient slots let you mark center points, and the flat edge has a center-finding rule. High-visibility numbers on the inner and outer scales are easy to read.