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How to exchange the Tongue of your Dial Indicator


      You may need to recalibrate the dial indicator.
      To do this, loosen the fastening screw that fixes the dial indicator in the dial indicator arm. Now position the dial indicator by moving it up or down so that both the small and large pointer show ZERO.
      When locking the screw do not tighten it too much, this can block the axle movement in the dial indicator.