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Thread: Dial Indicator Rod Extensions

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    Supporting Member Paul Jones's Avatar
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    Paul Jones's Tools

    Dial Indicator Rod Extensions

    I make my own dial indicator rod extensions from 3/16 diameter O-1 drill rod. These can vary in length from 1 to 6 depending on the application. I hold a 4-48 die in the lathe tailstock die holder to cut the male end and cut 0.050 thread relief at the shoulder to provide a tight fit into the dial indicator. The female end thread is 4-48, threaded approximately 0.030 deep, and the first two threads are drilled out for a tight fit. Some examples of the various uses for the extensions include digital depth indicator extension on a small milling machine, hard to reach measurements with the dial indicator, and adding more travel length to a lathe carriage measurement where each extension is exactly 1 long. Thanks for looking.
    Attached Thumbnails Attached Thumbnails Dial Indicator Rod Extensions-dial-indicator-extensions-4-48-threads.jpg   Dial Indicator Rod Extensions-dial-indicator-unimat-milling-head.jpg   Dial Indicator Rod Extensions-dial-indicator-extra-long-extension.jpg   Dial Indicator Rod Extensions-extra-extension-avoids-making-di-adjustments.jpg  

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  2. The Following 3 Users Say Thank You to Paul Jones For This Useful Post:

    Catfish (Jan 21, 2015), jjr2001 (Sep 1, 2016), kbalch (Jan 20, 2015)

  3. #2
    kbalch's Avatar
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    Thanks Paul! I've added your Dial Indicator Rod Extensions to our Measuring and Marking and Metalworking categories, as well as to your builder page: Paul Jones' Homemade Tools. Your receipt:


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    Thanks for the tip, Paul Jones.



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