Features: Revolutionize your stair building projects with this 360 degree rotational stair treads measuring tool, crafted from aluminum alloy for precisions and longevitys. Featuring adjustable length from 11.4" to 60.7" and a 360 degree rotational designs, this stair gauge set ensures accurate measurements. For professional builders, and diyer enthusiasts lookings to enhances the quality and efficiency of their stair constructions work. Whether renovating a home or constructing new staircases, this cutting guide tool is essential for achieving perfectly treads and consistent height. Simplifying complex stair building calculations with the added 180 degree scale, while the plastic manual knob allows for smooth adjustments during use, ensuring precise alignment. Specifications: Component: Aluminum Alloy Color:Black/Blue Measuring ranges: 11-60inches Added 180 degree scale more accurate help Adjustable length to 11.4"-60.7" 360 degree rotational measurement designs Package Includes: 1 Set Stair Treads Template Tool note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. ②.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.