Precision manufacturing: finely polished and chrome plated, and long-lasting. 45° oblique angle design: professional measurement, precise angle. Precision production: The incision is neat, the is smooth and free of burrs. Model Number:angle square Application:Wood Working Tool :Woodworking Type:Combination Type:Knife edge square Product angle:45 degrees treatment:laser oxide skin Notes:This product is not a instrument, it has a certain degree of accuracy error, with a range of ± 0.2 °. If your accuracy requirements are higher than this range, please choose carefully. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Green Material:Aluminum alloy Package Contents: 1 * angle square 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.