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Cleaning up an old Mahr Federal indicator

Discussion in 'METROLOGY - MEASURE, SETUP & FIT' started by Splat, Oct 14, 2013.

  1. Splat

    Splat Active User H-M Supporter-Premium

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    A friend of mine gave me an old .250" range Mahr Federal .0001 dial indicator. The needle sticks a bit so I was wondering how to clean it. Should I open her up and clean a lube or not open her and just use some alcohol and some type of light oil? Thanks.
     
  2. astjp2

    astjp2 United States Active User Active Member

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    Its most likely jeweled and would need to go to an instrument shop for repair. There is an adjustment screw that acts as a stop, if the stylus goes past a certain point, they stick and the screw prevents it. I know a shop that is local to me, cheaper than long Island Indicator, free quotes. PM me if you want contact info. Tim
     
  3. EmilioG

    EmilioG United States Active User H-M Supporter-Premium

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    Here's what the internals look like on a Mercer.
     

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