Woodworking Precision Calibration Ruler - Carpenter Square Features: High quality material, rust proof, anti-, and wear-resistant!Fits Easy to Use: Simple design allows for easy installation and adjustment, making it suitable for both beginners and . Compact and , making it portable and convenient to carry around for on-site use. L-Shaped Ruler High Precision 90 Degree Square Layout Tool The product may be updated constantly,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:Red Material: Aluminum alloy Package Contents: 1x Woodworking Calibration Ruler kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.