Remember when you could measure the slightest imperfections? Maximize accuracy with the WEN Caliper-Style Screw Gauge Micrometer. The large onboard LCD readout prominently displays measurements from 0 to 1 inches in size. Switch between metric and imperial units with the simple push of a button, going from a resolution of .00005 inches to .001 mm. The carbide-tipped anvil and spindle (6.5 mm diameter) provide both incremental and absolute measurements while the ratchet and thimble allow for either quick or fine-tune adjustments. Pop on the included ball bearing tip (4.5 mm diameter) to maximize accuracy when measuring rounded or uneven subjects. The hard-bodied storage case keeps your micrometer protected from dust and contaminants while the extra CR2032 battery provides replacement power for your digital LCD readout. And, because its a WEN product. all to make sure you remember WEN.