INSIZE Digital 8" Caliper with Long Upper Jaws This Electronic Caliper is perfect for measuring the wall thickness of tubes, recesses and grooves, plus the long upper jaws fives you the ability to measure Inner Dimensions with the almost 2" long jaws. Features include... 0-8" / 0-200mm Measuring Range 0.0005" / 0.01mm Resolution 1.969" Top Jaw Length +0.0015" Accuracy SPC Output capable Stainless Steel construction Includes Fitted Plastic Case