Dial Depth Gauge, Range 0 in to 12 in, Graduations 0.001 in, Accuracy +/-0.002 in, Base Length 2.5 in, Base Style Full, Dial Position Side, Dimension Type Inch, Included Certification No, Number of Measuring Rods 5, Operation Type Mechanical, Range per Revolution 0.1 in, Contact Point Shape Point, Ball, Depth Gauge Type Interchangeable-Rod Depth Gauge, Dial Color Green, Dial Reading 0-50-0, Includes 1 in, 2 in, 3 in, (2) 4 in Extension Rods, Pointed Tip and Ball Tip