[Features] This is an automatic retractable tape measure used for measuring length. The tape has a magnet at the end, so it can adhere to steel plates and steel frames that are difficult to hook onto with fingernails. The jaws are movable so that measurement errors caused by the thickness of the jaws can be corrected. The full lock and simple lock functions allow you to hold the tape in place while it is being fed out. The device is protected by a rubber case that protects it from shocks caused by drops. Comes with a belt hook and strap for easy portability.