1. Carbide anvil,durable 2. Large LCD display,clear display screen 3. Mechanical laser scale, can be used even without power 4. 3V large capacity battery, long-lasting battery 5. Two Kinds of Measurement Units Optional: Metric or Inch, More Convenient for Daily Use It can easily cope with harsh environments, thanks to its powerful IP65 protection level, waterproof, oil resistant, and dustproof Battery:3V Storage temperature:-20-60℃ Operation temperature:0-40℃ Service humidity:less than equal 80% Measuring range & Accuracy: 0-25 mm:±0.001 mm 25mm-50mm:±0.001 mm 50mm-75mm:±0.003 mm 75mm-100mm:±0.03 mm Colour:As Shown Material:alloy steel Package Contents: 1 x Micrometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.