642Z Top Reading Dial Depth Gage 65103

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. .001" Grad, 2 1/2" 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


  • Range (in): 0-8.6"
  • Graduations (in): .001"
  • Dial Reading: 0-100