Product Description You can trust our General Tools 147 Digital Caliper to give you the accuracy you need for a precision-based project or contract job. The 6" instrument has an extra-large LCD screen and a measurement range of 0 to 6" (153mm). 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. It also includes a conversion chart with instructions, spare battery, battery cover screwdriver, and a protective foam-lined case for easy storage. 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. From the Manufacturer Our groundbreaking Digital Fractional Caliper brings you three universal systems of measurement, making it an equally practical choice for both professional and do-it-yourself projects. The high-contrast digital display easily switches between inches, millimeters and fractions, with guaranteed accuracy to 0.01". In addition, the rugged stainless steel design delivers accurate readings of inside, outside, step and depth measurements. The Fraction+ comes with a foam padded plastic case for safe storage when not in use. EXTRA LARGE DISPLAY: Features an extra-large LCD screen and a measurement range of 0 to 6" (153mm). It provides a 3-mode digital display that changes quickly between decimal inches, fractional inches, and millimeters. AUTO POWER OFF: Fabricated from heavy-duty stainless steel and non-marring carbon fiber, our caliper tool can measure inside and outside diameter, depth, and step measurements. It includes an auto-on/off feature that preserves battery life. DIGITAL RULER: Provides highly accurate calculations for measuring and fitting joints, checking board thicknesses, and setting cutting depths. Perfect for construction jobs and home improvement projects. ELECTRONIC CALIPER: Helps make projects and woodworking jobs easier and more efficient. Our angle indicator includes a conversion chart with instructions, a spare battery, battery cover screwdriver, and a protective foam-lined case for easy storage. GENERAL TOOLS: We have been a recognized leader in the innovation, design, and development of specialized precision instruments for many years. We encourage craftspeople, artisans, and DIYers to work smarter, measure better, and increase productivity. EXTRA LARGE, EASY TO READ TRI-MODE DIGITAL DISPLAY - The Fraction+ Digital Caliper switches between inches, millimeters and fractions at the touch of a button. RUGGED STAINLESS STEEL DESIGN - has heavy duty housing and delivers inside, outside, depth and step measurements PRESERVE BATTERY LIFE - with the Digital Caliper's auto on/off feature Resolution 0.0005" (0.01mm), Accuracy 0.001" (0.02mm) INCLUDES: Power Source: SR44 battery, Foam Padded Carrying Case, 1 Year Warranty