Folding Triangle Ruler, Preciva 6 Inch Carpenter Square Layout Tool with Adjustable Positioning Magnet Extendable Multi-Angle Measuring Tool for Carpentry Construction and Woodworking
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6 Inch Extension Arm: The ruler is 6inch, and it comes with an 6 inch fold-out extendable arm, which increase the measuring range. The extendable length of the ruler is 12inch. Could meet your daily use.
Adjustable Positioning Tool: You can select the angle you want, adjust it to your desired angle. Just tighten the nut for positioning, press the middle lever to achieve precise positioning.