5-step Calibration Block for Ultrasonic Thickness Gauge 0.1"-0.2"-0.3"-0.4"-0.5" The lead time is about 2 days. FedEx shipping time to USA is about 5-7 days. This 5-step calibration block is "inch" unit, which is 0.1",0.2",0.3" 0.4" and 0.5" The steps will be graved in the block. In the listing picture, there is nothing in it. But what you receive will have the steps in it. If any questions, please contact us via message.