3-in-1 LCD Digital Vernier Caliper 1-6 inches, 0-150 mmOne touch button to instantly convert between inches, millimeters, and fraction units Easy to read wide screen display that shows readouts for exact inside, outside, and depth measurements accurate to 0. 001 inch Thumb roll mechanism and position lock for precise adjustments Measuring range: 0 6 inches & 0 150 mm Comes ready with a battery and a spare in a convenient storage case When you are looking for exact measurements, this 3 in 1 caliper is