The redesigned Lyman digital caliper features a high tech stainless body with a direct digital read-out. Switch back and forth from inches to millimetres with the touch of a button. Zero function allows comparison between measurements. Accurate to .001"/0.1mm. Includes storage case. The rugged stainless steel body and jaws guarantee accurate readings every time. The caliper takes four difference measurements: Inside, outside, depth and step. Perfect for machinists and tool makers.