577MXP Rounded Anvil Micrometer 66444

577, 577M Outside Micrometers with Rounded Anvils, Full Finish Tapered Frame
Rounded Anvil Micrometer, Carbide and Round Anvil, 0-25mm Range

The Starrett 577 micrometers are extremely useful for measuring the wall thickness of parts such as solid and split bearings, tubing, sleeves, collars, rings, various cylinders, and also measuring from the inside of a hole to an edge 0-25mm Range, 0.01mm Grad, Plain, Carbide Anvil & Spindle.

3D CAD Files / Exploded Parts Diagram
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  • No glare Starrett satin chrome finish
  • Advanced sleeve design with staggered lines and distinct figures for precise, easy readability
  • Balanced frame design for comfortable, accurate measuring
  • Tapered frame for narrow slots and tight places
  • Furnished with fixed, non-rotating anvil
  • One-piece frame of drop forged steel
  • Extremely hard and stable one-piece spindle
  • Quick and easy adjustment
  • Design allows 50% to 75% contact with the thread to be measured, insuring contact with the pitch diameter at all times


  • Made in America: Yes
  • Micrometer Type: Micrometer with rounded anvil
  • Range (mm): 0-25mm
  • Graduations (mm): 0.01mm
  • Anvil/Spindle Material: Carbide
  • Anvil Type: Round
  • Spindle Type: Flat


    2D Dimensional Drawing (PDF)



    33.70 kb



    Catalog 33 - Section 1 - Micrometers
    The L.S. Starrett Company

    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.

    [69 pages]

3D CAD Files / Exploded Parts Diagram

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Product Testimonials

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      Member of Kit
      Item #DescriptionPart No.QtyInformation
      20SHELL, ADJ. METRIC05134-M1
      40SCREW, .157-40 SLOT X .377 LONGPT051361
      50NUT, .375-52PT164141
      60ANVIL #577XP27170-01
      70SPRING, BARREL10058-01
      80SHELL, ROUND METRIC09989-M1
      90WRENCH #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: www.P65Warnings.ca.gov