Mitutoyo Dial Caliper-Type Thickness Gage This Mitutoyo thickness gage is designed to help you measure thickness applications that are in hard to reach areas. When you have a lip or ledge that you need to get over to measure your parts, this easy-to-use, operator friendly gage provides a direct, fast and accurate reading. Specifications include... 0-.80" Measuring Range 0.0005" Graduations +0.0015" Accuracy Max Measuring Depth: 3.2" 0.97" Contact Length Upper 0.10" Contact Length Lower Ball Tip 1.5mm Diameter Radius on both upper and lower arms