Easy to use: use the locking lever to keep them in place. The lever is designed for easy operation, even in a narrow work area, only one hand is needed to operate from either side. Save time and improve your work and productivity. Adjustable: This angle measuring tool can adjust the tension of the pin with a screw, easy to draw shapes, let you draw patterns on wood, tiles or materials. Easy to carry: The marking measuring ruler tool is foldable. Compact design fits in your pocket, light weight gives you the freedom to carry it to any workplace. Precise measuring tool: angle measuring tool is easier and more accurate than a standard protractor. The measuring tool can be used to draw lines parallel to the edge of the fabric. Easy to apply: The texture is fine and unctuous, easy to spread. Suitable for all skin types. Essential for carpenters: angle measuring tool is perfect for student drafting, architectural, carpentry, length measurement, gift perfect for students, craftsmen, architects and designers.