US Patent 7774947 Mitre tool guide

A tool and method for making precision cuts with conventional saws and other woodworking machines. The shape of an inside or outside corner of a construction, such as a wall construction, is obtained with the tool, and the tool is used to as a guide to set the blade of the cutting apparatus to the proper cutting position. The tool may be used to indicate the mitre cuts for both inside and outside wall corners without having to measure the angle with a measuring tool and determine the precise degrees of the angles to be cut.