Measurement Range: 0-200mm, Resolution: 0.02mm, clear calibration on the caliper, easy to read Made of 45CR(ruler bar) and alloy(ruler frame) material, sturdy and not easy to break off Vernier scale and gauge with a positive locking set screw for precise measurement in fine units Widely used for inside, outside, depth and step measurements Comes with a solid box for better protection and storage, reliable used for very long- Colour:Silver Material:Aluminum alloy Package Contents: 1 x depth vernier caliper 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.