1、Double High Definition Leveling Bubble: Woodworking protractor tool has built in dual high definition leveling bubble for convenient measurement and observation to improve measurement accuracy. The scale is more convenient to use, accurate in millimeters, ensuring flatness and accuracy. 2、270° Angle: The horizontal and vertical lines of the carpenter's ruler are not constrained, and they are locked at any angle within 270°. The angle measurement is friendly for user. 3、Magnet Attachment: Angle finder ruler built in scoring needle tip is inserted into the slot, which is both safe and anti loss. The built in magnet absorbs and folds up, making tool strong and not falling. 4、Rubber Cover: Woodworking protractor tool is equipped with a fall resistant rubber cover to protect the ruler head, increasing its service life, and the cover is detachable. 5、Wide Application: Combining the functions of a angle meter and a protractor, This ruler can be used to measure all the angles in your workshop for a wide range of uses, such as checking the angle of a table saw blade or the accuracy of a miter saw, making angle cuts or measurements, trimming or wall angle measurements. A perfect gift for woodworkers, DIY enthusiasts, etc.