The present invention is a straightedge guide which is to accommodate a carpenter in performing accurate linear cuts. The present invention has a straightedge and a carriage, which rides along the rails of the straightedge. During operation, a cutting tool such as a circular saw is attached to plate of the carriage. Subsequently, the carriage and the attached circular saw are transported along the rails of the straightedge while the circular saw is cutting through the material beneath both the circular saw and the straightedge. The present invention is also useful in performing vertical straight cuts as the present invention has a vertical holder, which helps stabilize the straightedge upon a vertical flat surface. Attached to each rail of the straightedge is a ruler, which provides accurate measurements in woodcutting. Along with straight cuts, the present invention is also useful in performing circular cuts as the present invention is rotatable.