Features: There are magnetics designs on both the ruler- and the base, which can give you a better experience. The base part can be disassembled and used alone, a leveling bubble on the base for you to use. Multi-fonction: not just a simple ruler, it realizes a variety of functions in one ruler, such as multi-angle scribing, fixed-point circle drawing, line and circle drawing, depth measurement and other functions. Portable size and easy to carry, you can put this ruler into you tool bags to carry easily and share it with your friends and families. This ruler can be widely used in your woodwork process, DIY process and other needs-. Specifications: Material: aluminum alloy Size: approx 19.7x19.7cm/7.8-inch Accuracy: 0.1 Ruler thickness: 3.6mm Base thickness: 18mm Color: silver/red/grey- Package Includes: 1x Triangle Ruler note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.