Features 1、Aluminum Construction: Crafted from robust aluminum alloy, this angle measuring tool ensures exceptional strength and resistant to bending or breaking, providing long lasting reliability for all your projects. 2、Versatile Usage: This multifunctional ruler serves various purposes, including angle measuring, straight lines, parallel lines, and arc measurements, making it a comprehensive tool for any task. 3、Accurate Angle Measurement: Utilize this tool as a protractor, measuring angles from 0 to 180 degrees with clarity, featuring fine increments of 5° and larger intervals of 15° for accuracy in every project. 4、Circle and Arc Drawing Capability: The center point in the circular disc allows you to effortlessly draw circles or arcs with diameters ranging from 4cm to 30cm, enhancing your design capabilities significantly. 5、Easy Parallel Line Drawing: Simply position the ruler upright and extend it to 90 degrees; pull the right scale down to effortlessly create evenly spaced parallel lines for accurate and professional results. Specification Item Type: Aluminum Multi Ruler Material: Aluminum Alloy Package List 1 x Flippable Ruler