Perfect 90 Degree Angleto create the precision 90 degree right angle trim essential for balanced project results. the right angle ruler can measure objects quickly. Useful and practical L-shaped tool, comfortable to hold. Clear and accurate scalesize: 100*20*15mm. near the center of the right angle finder, there are 45 degree and 22.5 degree scales, multi-angle scale, near the center of the right angle positioning ruler, which is convenient for measuring the angle . Impact-resistant plastic constructionpositioning squares with impact-resistant plastic construction, which ensures durability and ease of use, has a high level of hardness, is resistant to falling, not easy to oxidize and easy to carry. Easy to useto put a square in the corner of the two pieces of material, you need to square it and fix it with a set of brackets. the positioning bracket can be clamped to the inside or outside corner of the room, standard 90, four corners and more. Woodworking Positioning SquaresThese woodwork positioning squares are ideal for small and large medium jobs such as assembling cabinets and shelves, aquariums, frames, connecting two profiles or welding a square piece, etc.