Johnson Level & Tool 1889-0600 6-Inch Digital Caliper Large easy-read digital LCD display Measurements read in Millimeters, Inch-Decimal and Inch-Fraction and zero button to set display to 0.000 at any position Hard-case included Scale in tenths of an inch up to 6 inches and millimeters with thumb wheel and locking knob to set and lock the scale at any desired measurement Low battery indicator when display numbers are flashing and automatic shut-off after 5 minutes without use 1 Year Warranty: Johnson Level warrants this product against defects in material and workmanship for one year after the confirmed purchase date. At its option, the company will replace or repair the product if it fails under normal use.