Features: This 300MM aluminum alloy square hole ruler is a must have for woodworking enthusiasts. It features 45/90 degree angles square hole ruler and a height gauge. It is suitable for woodworking enthusiasts and professionals who require precise measurements. It can be used in various woodworking scenarios such as measuring the height of woodwork and creating precise angles. This high quality aluminum alloy ruler is durable and easy to use. Specifications: Material:Aluminium Alloy Size:Approx.30x10.8cm/11.81x4.25inch Color:Red Net Weight:200g Package Includes: 1x Marking Gauge Line note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.