<b>How to use the Contour Gauge with lock ?</b><br> Step 1: Prepare the contour gauge with lock and the tools you need.<br> Step 2: Use the contour duplications gauge with lock to measure the profile of the corner.<br> Step 3: Just marker the profile gauge with lock on the carpet or tile and cut into the trace.<br> Step 4: Then the carpet or tile will completely match the contour of the corner.<br> <br> <b>Specifications:</b><br> Item type: Profile Gauges with lock <br> Material: ABS plastic<br> Size: 10inch-Widen;5inch<br> Color: Red;Green<br> <br> <b>Included in Package:</b><br> 1 x 10inch Widen Contour Gauge with lock<br> 1 x 5inch Contour Gauge with lock<br> <br> <b>Note: </b><br> 1.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!<br> 2.Please allow 1-3cm measuring deviation due to manual measurement.(1 cm≈0.39 inch).<br> <br> <b>If you still have any questions, please not hesitate to contact us, we will try our best to help you</b>