Feature: Easy To Use Press the teeth against the object to match the contour and then trace the shape you need,easy and convenient to read Durable ABS Plastic The contour gauge is made of ABS plastic, light, convenient, durable and will not scratch the measured object. Deeper, More Flexible & Precise Deeper than regular one, so it can easily copy any shape,Ideal for Fitting Tile, Laminate, Carpet, Verifying Dimensions, Moulding, etc. How to use the Contour Gauge ? \r\n\r\nStep 1: Prepare the contour gauge and the tools you need. \r\nStep 2: Use the contour duplications gauge to measure the profile of the corner.\r\nStep 3: Just marker the profile gauge on the carpet or tile and cut into the trace. \r\nStep 4: Then the carpet or tile will completely match the contour of the corner. Specifications: Item type: Contour Gauge \r\nMaterial: ABS plastic \r\nSize: 10 inch and 2*5 inch \r\nColor: Orange