56470

256MPN-25 Disc-Type Micrometer 56470

The Starrett 256M Disc-Type Micrometer is used to measure the thickness of work sections such as ribs, lands, fins, cutting edges on form tools, and chordal thickness of gear teeth. Because of their large anvil and spindle faces, the 1" and 25mm sizes are also useful for measuring the thickness of sheet materials like paper, cardboard, rubber, and plastics. 0-25mm Range, 0.01 Grad, Non-Rotating Spindle.


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Features

  • Advanced sleeve design with staggered lines and distinct figures for precise and easy readability
  • Quick-reading figures - every thousandth numbered on inch tools
  • Balanced frame and thimble design ensure easy handling and better readability
  • Available in the 1" and 25mm sizes with rotating or non-rotating spindle
  • Quick and easy adjustment
  • Starrett satin chrome finish - no glare - resists rust
  • Ring-type knurled lock nut for quick and sure locking
  • The combination ratchet and speeder for uniform pressure and quicker adjustment on all sizes
  • Gracefully designed tapered frame for use in narrow slots and tight places
  • Anvil and spindle discs are 1/2" (12.7mm) diameter tapering to .015" (0.4mm) edge thickness making it possible to enter narrow grooves and recesses
  • Rigid one-piece frame of drop forged steel
  • Extremely hard and stable one-piece spindle
  • Micro-lapped measuring faces
  • This tool is accurate to .00015" or 0.003mm measuring over the whole surface and .0002" or 0.004mm measuring on the edges

Specifications

  • Micrometer Type: Disc-Type Micrometers with non-rotating spindle
  • Range (mm): 0-25mm
  • Graduations (mm): 0.01mm
  • Anvil/Spindle Material: Steel
  • Anvil Type: Flat Disk
  • Spindle Type: Flat Disk

Parts

    Member of Kit
    Item #DescriptionPart No.QtyInformation
    1FRAME, METRIC #256NOT AVAILABLE1
    2SHELL, ADJ. METRIC05134-M1
    3SHELL, METRIC19740-M1
    4NUT, #4-4819160-02
    5CAP, SHELLPT080261
    6ANVIL, FRAME #25618528-01
    7NUT, .291-40PT167551
    8NUT, .375-52PT164141
    9SPINDL SCR, .294-1/219154-01
    10SCREW, #2-64 LOCATING X .138 LONG19742-01
    11SPINDLE,NON-ROTATING19738-01
    12SPRING, BARREL10058-01
    13WRENCH #3PT015261

Downloads


    2D Dimensional Drawing (PDF)

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