124CZ Solid -Rod Inside Micrometer 50550

The Starrett 124 Solid -Rod Inside Micrometer Sets are the most popular inside micrometers because of their lightness, ease of use, and range. They are very useful for measuring inside diameters of cylinders and rings and measuring parallel surfaces. The desired range is obtained by assembling rods and spacing collars to the micrometer head. Measuring rods are provided with a shoulder that is set accurately in the micrometer head and locked in position. When assembling rods to the A and B heads, the reading line on the micrometer head should be lined up with the marking on each rod (except for the 2-3" and the 50-75mm rods). Rod diameters are approximately 1/4" (6mm) on the A and B sizes, and approximately 11/32" (8.5mm) on the C size. Each rod has individual length adjustment for the anvil by means of special wrenches furnished. 8-32” Range, .001” Grad, 4 Measuring Rods with Case.

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  • Insulated rods marked with length
  • Adjustable for length
  • Measuring rods are solid
  • Hardened and ground anvils
  • Quick-reading figures
  • 6-1/2" (165mm) long handle is available (124H)


  • Micrometer Type: Inside Micrometer Set
  • Range (in): 8-32"
  • Graduations (in): .001"
  • Measuring Rods (qty): 4
  • Spacing Collars: One 1" Two 2"
  • Case Type: Padded Case
  • Accuracy (in): Lead accuracy +/-.0001" per inch


    Member of Kit

    Item #DescriptionPart No.QtyInformation
    2•BODY,ENGLISH #124C22692-01 
    3•NUT, .375-52PT164141 
    4•SHELL, OUTSIDE-ENG.17785-01 
    5•SHELL, ADJUSTING17787-01 
    6•SPRING, BARREL10058-01 
    7•SPINDLE SCR, .297-4017789-01 
    8•CAP, SHELL01540-01 
    9•HANDLE, SHORTPT01546A2 
    10•NUT, .437-40PT073861 
    11•CHUCK, ROD07387-01 
    12•WRENCH #3PT015261 
    13COLLAR, LARGE 2"PT073892 
    14COLLAR, SMALL 1"PT073901 
    15ROD, ENGLISH 8-14PT992011 
    18ROD, INSIDE 14-20"PT992021 
    22ROD, 20"-26"PT992031 
    26ROD, INSIDE 26-32"PT992041 
    30WRENCH, ROD POINTPT191771 
    31WRENCH, SPANNERPT057111