0-25/25-50/50-75/75-100 mm 0-1/1-2/2-3/3-4/inch 0.0001" Gauge Outside Metric Diameter Micrometer Caliper Tool With Mini Wrench ,Easy to Use

1.With lock clamp 2.With a benchmark poles 3.Blue smooth paint frame 4.Measuring surface with a hard alloy head 5.Ratchet locking devices or friction casing can ensure accuracy