INSIZE Outside Micrometer Set 0-4" Features include... 0-4" Measuring Range 0.0001" Graduations Carbide Measuring Faces 0.256" Spindle Diameter Ratchet Stop Spindle Lock Furnished in fitted Case Included in this set... 0-1" Micrometer 1-2" Micrometer with Standard 2-3" Micrometer with Standard 3-4" Micrometer with Standard