Fowler Digit Counter Micrometer Set Features include... 0-4" Measuring Range 0.0001" Graduations Digit Counter reads to 0.001" Carbide Measuring Faces Ratchet Thimble and Locking Nut Includes Fitted Case Included in this set... 0-1" Micrometer 1-2" Micrometer with Standard 2-3" Micrometer with Standard 3-4" Micrometer with Standard