Feature:1. High Structural Strength: ABS engineering plastic alloy manufacturing has high structural strength and strong impact resistance2. Omni Directional Measurement: Corner clamping square come with clear and accurate scale, support multi angle and omni directional measurement3. Accurate Surveying And Mapping: You can use a square ruler to draw vertical auxiliary lines to achieve accurate surveying and mapping4. Assisting Wood Work: Right angle design, assisting wood work fixing, also assisting positioning, very practical5. Assemble Picture Frames: Corner clamping square can be used for assembling picture frames, saving both labor and timeSpecification:Item Type: 90 Degree Positioning SquaresMaterial: ABSPositioning Angle: 90° Package List:1 x 90 Degree Positioning Squares