Newest addition to the Neiko digital caliper line, premium grade with heavy duty metal alloy casing * Comes with a mini screwdriver and extra battery * Digital calipers allow you to quickly and accurately gauge your measurement. * No more squinting and bending close, trying to squeeze into bizarre spaces. * SAE 0" to 6"and METRIC 0 to 155MM Extra Large LCD Display Extra Battery Free Case Accuracy +/- .02mm