INSIZE Coolant Proof Digital Caliper Features include... 0-6" / 150mm Measuring Range 0.0005" / 0.01mm Resolution Coolant Proof, IP67 Rated Protection Large Display With rectangular Depth Bar Buttons: zero, on/off, inch/mm Battery CR2032, includes one spare battery With locking clamp and thumb wheel for outside, inside, depth and step measurements Supplied in fitted storage case Includes Inspection Certificate traceable to NIST