【Carpenter's Angle Ruler Set】: The carpenter's angle ruler set contains a triangle ruler and an angle combination ruler, as well as a pencil with 12 different colored pencil refills for use on different objects. Carpenter's Square is the perfect tool for accurately measuring and marking objects to meet your different needs. 【Thickened Triangle Ruler】: Combination Square has a total measuring length of 18cm and can measure from 0° to 90°, it can also draw horizontal lines, equal angles and parallel vertical lines, with 3-15mm diameter holes for simple and quick drilling work, as well as adjusting serrations and drawing circles for marking drawing boards. 【Combination Angle Ruler with Adjustable Nut】: The Metal Marking Square has a total measuring length of 30cm and can measure 45° angles, the nut on the top is adjustable and can be moved at will, making measurement more convenient. The horizontal bubble of the Carpenter's Triangle Square is less likely to leak, the hidden scribing pin