3908MA Dial Test Indicator with Dovetail Mount 12520

The Starrett 3908 precise, high quality test indicator offers a full complement of standard features. Indicator includes two dovetail clamps and case.

Contact Starrett


  • Three dovetail positioning mounts work with most existing test indicator accessories
  • Precision gear-driven design with smooth, jeweled movement
  • Contact point reverses automatically, always maintaining clockwise hand rotation
  • Contacts are frictionally adjustable and replaceable
  • Meets or exceeds ANSI/ASME accuracy specifications
  • High contrast, easy-to-read dials with a white background on inch reading and a yellow background on millimeter reading indicators
  • Narrow body for in reach ability
  • Satin chrome finish for durability


  • Range (mm): 0.2mm
  • Graduations (mm): 0.002mm
  • Dial Reading: 0-100-0
  • Attachments: 4mm contact point, 9.5mm & 4mm dovetail clamps & case
  • Dial Color: Yellow 40mm Diameter


    Member of Kit
    Item #DescriptionPart No.QtyInformation
    1DIAL TEST INDICATOR, 0-100-0, 40MM DIAM.3908MA1
    2•2MM BALL X 12.4MM (.488") LONG CONTACT46188-0(2)2
    3•8MM(.315") DIA. DOVETAIL LOCK PIN46174-01
    4•4MM (.157") DIA DOVETAIL LOCK PIN46176-01