Aluminum Alloy Protractor Folding Triangle Positioning Ruler for Building Framing Woodworking Measuring Tools Layout Indicators Square Measuring Ruler with Eraser PencilFeature:1. Purpose: multifunctional folding triangular woodworking board, can draw 90° angle, balance line, vertical line and draw equal center point and adjustable positioning knob corresponding to the drawn line and the edges of all intersection points are equal. Used for drawing slopes, cutting the ends of roof trusses and opening bows.2. Super hard aluminum alloy material, wear-resistant and anti-corrosion, clear scale, easy positioning angle, wide range of applications.3. Steel needle threading tool: tighten and fix the tail on the main body of the ruler, which is easy to carry.4. Adjustable Level: It can be adjusted to the required angle during use, tighten the nut for positioning, and press the middle adjustable rod to achieve precise positioning. Specification:Material: aluminum alloy Ruler base thickness: 25mm Ruler thickness: 8mm Size: folded 165*183mm, unfolded 310*183mm Application: used for wood measurement, angle marking, etc. Note:Due to the different monitor and light effect, the actual color of the item may be slightly different from the color showed on the pictures. Please allow 1-3mm measurement deviation due to manual measurement.1 X Line Ruler1 X Pencil (Random)1 X Eraser (Random)