Product Name: L-Shaped Hole Ruler Material:Anodized Aluminum Alloy Structure Type:Metric 300mm/Imperial 12 Inch Color:Red+Black Thicknes:2mm Scale: Laser Front and Back Double Scale Degree:90 Degree Squareness:0.008mm Options: Metric:300mm Length:300mm Hole Distance:1mm Hole Diameter:0.7mm Scale:Front and back scale Imperial 12 Inch Length:12 Inch Hole Distance:1/16 Inch Hole Diameter:0.7mm Scale:Front and back scale Features: 【 High Quality】 Made of Anodized Aluminum Alloy Structure, beautiful and durable to use. 【Mark Precisely】 Precision L square , make sure accurate woodworking measuring and marking. 【Easy-to-Read Thermal】 Both front and back include scale and hole, you can use both right and left hand. 【Stable yet lightweight】Including hole positioning design, handly weight, perfect and precision to marking. 【Both  metric&imperial type】Draw straighter,more accurate parallel lines in less time than you can imagine.   Package Included: 1 x     L-Shaped Hole Ruler