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-.40" Measuring Range 0.001" Graduations +0.0008" Accuracy Max Measuring Depth: 1.37" 0.85" Contact Length Upper 0.58" Contact Length Lower 6mm Diameter Flat Tip on both upper and lower arms