Revolving stairs,ordinary stairs and stair corners can be measured. ●Flexible Adjustable● Wood stair treads and risers kit will help you measure stair treads, risers and shelves. Easily adjust the angle, length and height to meet any work requirements. ●Scope of Application● The stair tread gauge template tool is suitable for cutting and measuring stair treads, stairs, risers, shelves, window sills, closet shelves and some angular layouts. Storage Box Beautiful storage box to keep your stair gauge and easy to carry Knob Clamps Knob clips can be attached to stair gauge wood board to increase length. Composite Wood Boards Composite wood board can adjust stair gauge from 7.67" to 49" in length. Easily Adjust the Angle Easily Adjust the Length Measure Revolving Stairs,Ordinary Stairs and Stair Corners Easy to Operate ● Easy to Install and Remove ● Securely locks into place using 2x knobs,if your stair treads are very long, you can use more stair treads,easy to set up and use. ● Mark Stair Treads ● Make marks on the front of the 1X2 / 1X3 board where you use this stair tread fixture. Follow the markings of the stair gauge tool and cut your incisions will become perfect.