PRECISE MEASURING- The Stalwart shockproof stainless-steel dial caliper has dial graduations of 0.001” and.001” for accuracy. Additionally, the easy to use thumb-roll mechanism and position lock allow for sure adjustment and added precision. DURABLE CONSTRUCTION- Made of stainless steel this dial caliper will hold up during tough working situations. The included plastic carry case protects your caliper and makes it readily available for on the go projects. MOBILE- The stainless-steel caliper is lightweight and easy to carry anywhere. Great for home or work projects. PRODUCT DETAILS – Measurement range 0-6 inches. Measures inside, outside, depth and step. Made of stainless steel and includes a plastic carry case.