Quick alignment of the guide rail via a movable cutting indicator. Cutting indicator for various stop positions of the parallel stop on the handheld circular saw. Easy attachment of the guide rail to the workpiece with clamps. Drill holes in the guide rail allow for fixation with nails or screws. Compatible with carpentry guide rails. The angle stop, in conjunction with the carpentry guide rail and the practical cutting indicator, facilitates work with the carpentry handheld circular saw. The angle device increases precision and efficiency in sawing and milling tasks. The scale on the angle stop allows for setting angles up to 90° on both sides. With a 1000 mm long guide rail, the set is suitable for repeatable precise miter and bevel cuts in timber framing work with the carpentry handheld circular saw.