You can trust our General Tools Digital Caliper 1478 to give you the accuracy you need for a precision-based project or contract job. The 8" instrument has an extra-large LCD screen and a measurement range of 0 to 8" (203mm). It features a 3-mode digital display that changes quickly between decimal inches, fractional inches, and millimeters. It's fabricated from heavy-duty stainless steel and non-marring carbon fiber and can calculate the inside and outside diameter, depth, and step measurements. This device is a must-have for manufacturing engineers and machinists to guarantee that components meet quality standards. General Tools has been a recognized leader in the innovation, design, and development of specialized machinist tools for many years. We encourage craftspeople, artisans, and DIYers to work smarter, measure better, and increase productivity.