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Tru-Pos Locators UNJF thread

Need to measure some threaded holes 1/4-28 UNJF.
Anyone know where I can find plugs for this thread to check location?
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  • Yeah, the center will stay the same, but if the TP has a MMC callout, you'll need an accurate diameter. I've used cylinder probes to measure TP @ MMC of threads in the past with great results.


    You mean you got results that said they were ok.
    cylinder probes cannot be calibrated by pcdmis.
    if you cant calibrate it you cant use it.
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  • Yeah, the center will stay the same, but if the TP has a MMC callout, you'll need an accurate diameter. I've used cylinder probes to measure TP @ MMC of threads in the past with great results.


    You mean you got results that said they were ok.
    cylinder probes cannot be calibrated by pcdmis.
    if you cant calibrate it you cant use it.
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