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124MD Solid -Rod Inside Micrometer 50553

Starrett 124 Solid-Rod Inside Micrometers
50-800mm, 0.01mm Grad, 124MA/134MC Rods

The Starrett 124M 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. 50-800mm, 0.01mm Grad, 124MA/134MC Rods furnished.

This item is discontinued. Please consider the recommended alternative listed above or contact our special order department at (978) 249-3551 x410 for more information.

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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)


  • Made in America: Yes
  • Micrometer Type: Inside Micrometer Set
  • Range (mm): 50-800mm
  • Graduations (mm): 0.01mm
  • Accuracy (mm): Lead accuracy +/-.003mm per 25mm


    Catalog 33 - Section 1 - Micrometers

    In the hands of a skilled operator, the precision micrometer is the most accurate hand-held tool available. When close measurements are necessary, the micrometer is the ideal tool for the job because measurement and reading are on the same axis and the anvil end is supported by a strong frame.

    Precision Hand Tools (Catalog 33)

    612 page catalog featuring precision hand tool, force measurement, vison systems, optical comparators, laser measurement, and flat stock.

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      Member of Kit
      Item #DescriptionPart No.QtyInformation
      4••BODY,METRIC #124MA B17074-01
      5••SHELL, OUTSIDE METRIC01535-M1
      6••SPINDLE SCR, .294-1/2mm17078-01
      7••CAP, SHELL01539-01
      8••NUT, .375-5217071-01
      9••HANDLE SCREW FOR H124A/B MIC HEADPT01546A(2)1
      10•COLLAR, SMALL01579-M1
      11•ROD W/ANVIL 50-75MMPT993121
      12••ROD, 50-75MM #124M01569-M 11
      13••ROD POINT WITH NUT, FOR #124PT076181
      14•ROD W/ANVIL 75-100MMPT993131
      15••ROD, 75-100MM19009-01
      16••ROD POINT WITH NUT, FOR #124PT076181
      17••SLEEVE, INSULATING24627-01
      18•ROD W/ANVIL 100-125MMPT993141
      19••ROD, 100-125MM19010-01
      20••ROD POINT WITH NUT, FOR #124PT076181
      21••SLEEVE, INSULATING24628-01
      22•ROD W/ANVIL 125-150MMPT993151
      23••ROD, 125-150MM19011-01
      24••ROD POINT WITH NUT, FOR #124PT076181
      25••SLEEVE, INSULATING24629-01
      26•ROD W/ANVIL 150-175MMPT993161
      27••ROD, 150-175MM19012-01
      28••ROD POINT WITH NUT, FOR #124PT076181
      29••SLEEVE, INSULATING24629-01
      30•ROD W/ANVIL 175-200MMPT993171
      31••ROD, 175-200MM19013-01
      32••ROD POINT WITH NUT, FOR #124PT076181
      33••SLEEVE, INSULATING24629-01
      36••CHUCK, ROD07387-01
      37••SHELL, OUTSIDE-MET.17786-01
      38••SPRING, BARREL10058-01
      39••BODY,METRIC #124MC22693-01
      40••NUT, .375-52PT164141
      41••SHELL, ADJUSTING17788-01
      42••SPINDL SCR, .294-1/217790-01
      43••CAP, SHELL01540-01
      44••HANDLE, SHORTPT01546A2
      45••NUT, .437-40PT073861
      46•COLLAR, LARGE07389-M1
      47•COLLAR, SMALL07390-M1
      48•ROD SUB ASSEMBLY 200-350MMPT993221
      49••ROD,METRIC 200-350MM18025-01
      50••ROD POINT SUB ASSEM.PT073841
      51•ROD SUB ASSEMBLY 350-500MMPT993231
      52••ROD,INSIDE 350-500MM19453-M1
      53••ROD POINT SUB ASSEM.PT073841
      54••SLEEVE, INSULATING24630-01
      55•ROD SUB ASSEMBLY 500-650MMPT993241
      56••ROD,INSIDE 500-650MM19454-M1
      57••ROD POINT SUB ASSEM.PT07384(2)1
      58••SLEEVE, INSULATING24630-0(2)1
      59•ROD SUB ASSEMBLY 650-800MMPT993251
      60••ROD,INSIDE 650-800MM19455-M1
      61••ROD POINT SUB ASSEM.PT073841
      62••SLEEVE, INSULATING24630-0(3)1
      63WRENCH, SPANNERPT057111
      64WRENCH, ROD POINTPT191771
      65WRENCH #3PT015261

    California Proposition 65 Warning

      WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to: