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Thread: Centering Dial Indicator

  1. #1
    Supporting Member
    Join Date
    Jul 2020
    Thanked 5 Times in 1 Post

    johncg's Tools

    Centering Dial Indicator

    Recently had to use the rotary table on the milling machine but did not have enough headroom to center it with the co-axial indicator. My milling table is mounted on a circular column so there is no possibility to lower it down, indicate and putting it up again without loosing the centering. Came up with the idea to use a 30mm range dial indicator. Unscrewed the tip and made a quick perpendicular extension enough for clearance. Worked beautifully. Can indicate holes ranging from around 50mm to 110mm diameter.

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    Centering Dial Indicator-indicator-2.jpg

    Centering Dial Indicator-indicator-3.jpg

    Centering Dial Indicator-indicator-4.jpg

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  2. The Following 5 Users Say Thank You to johncg For This Useful Post:

    bustre00 (Sep 26, 2021), Home-PC (Sep 27, 2021), Jon (Sep 30, 2021), metric_taper (Sep 26, 2021), NortonDommi (Sep 24, 2021)

  3. #2
    Content Editor
    Supporting Member
    DIYer's Avatar
    Join Date
    Aug 2013
    Thanked 1,608 Times in 1,442 Posts

    Thanks johncg! We've added your Dial Indicator Offset Extension to our Measuring and Marking category,
    as well as to your builder page: johncg's Homemade Tools. Your receipt:

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