642MZ Top Reading Dial Depth Gage 65105

642,642M Back-Plunger Dial Depth Gages
Top Reading Dial Depth Gage, 0-215mm Range, 0-100 Dial, 0.01mm Graduations

The Starrett 642 Top Reading Dial Depth Gage uses the back-plunger indicator to provide an upward-facing dial for easier readout. The operator selects the extension and contact point required, zeros the tool on a master and then reads any deviation of the work directly on the dial. 0.01mm Grad, 60mm Base with Extensions and Case.

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  • Indicator does not have to be repositioned to get the full range available
  • 2-1/2" (60mm) base
  • Two contacts and five extensions extend the range to 8.6" or 215mm
  • Charts are supplied showing combinations of contacts and extensions required to achieve certain lengths
  • Case is included


  • Made in America: Yes
  • Range (mm): 0-215mm
  • Graduations (mm): 0.01mm
  • Dial Reading: 0-100


    Catalog 33 - Section 4 - Depth Gages

    We offer a choice of depth products varying in form, complexity, cost and accuracy, from the most accurate depth micrometers (electronic, dial and vernier) to the less complex precise rule gages and combination rule gages.

    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
      2•CASE #64126111-01
      3•SCREW, 1/16-64 SLOT X .188 LONG11793-02
      4•PLATE GEAR ASSEMBLY #641MPT995181
      5••SCREW, 1/16-64 SLOT X .107 LONG24010-02
      6••SUPPORT, RACK PINION24000-01
      7••PINION, HAND26077-01
      8••TOP PLATE, METRIC26075-01
      9••SUPPORT,HAND PIN-MET26081-01
      10••SUPPORT,RACK PIN-MET26082-01
      11••SCREW, 1/16-64 X .112 LONG26084-01
      12••PIN, .062X.16024033-01
      13••PIN, .062X.12524032-05
      14••HAIRSPRING&GEAR STAF26079-01
      15••RACK PINION ASSM-MET26080-01
      16••BEARING, BRASS #711BPT092782
      18•PIN, RACK GUIDE24509-02
      19•GUIDE PIN23994-01
      20•RACK, METRIC26083-01
      21•SPRING, .069X.085X.430X.008X1 424004-01
      22•SPR. WSHR,1.093X1.50X.00710800-01
      23•DIAL,#642M STAT.26128-01
      24•DIAL,#642M MOVABLE26130-01
      25•HAND, #196PT083601
      26•HAND, #81 TELL TALE07478-01
      27•O-RING, RUBBER #8123809-01
      29••BEZEL, #81PT09282N1
      30••CRYSTAL, #81PT068461
      31BASE, 2 1/2"26015-01
      32CONTACT POINT .35026030-01
      33CONTACT POINT .55026031-01
      34EXTENSION, 10MM26055-01
      35EXTENSION, 20MM26056-01
      36EXTENSION, 25MM26057-01
      37EXTENSION, 50MM26058-01
      38EXTENSION, 100MM26059-01
      39SCREW, #4-48 SET X .125 LONG26072-02

    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