Frankford Caliper

Discussion in 'Reloading' started by Spino, Jun 7, 2008.

  1. Spino

    Spino Well-Known Member

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    want to make sure on the measurement.

    do you measure with the extended part of the caliper or the inside part (which seems to be a bit longer) the inside part that I'm talking about is the part of the caliper that is closest to the measurement numbers.
     
  2. KRP

    KRP Well-Known Member

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    You want to measure with the part of the jaws that touch when the dial reads zero.:confused:
     

  3. Spino

    Spino Well-Known Member

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    ok, thanks for the info and that makes sense... So how do you set it to zero when you calibrate it? Thanks for the help!
     
  4. KRP

    KRP Well-Known Member

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    Most calipers have a set screw that you loose and then turn the outer ring of the dial to zero.
     
  5. Spino

    Spino Well-Known Member

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    thanks! so I'm looking at mine and I see that it had a set screw, but it only lets me rotate the face? Do I set the long end of the needle at zero or the short end with the arrow?? It's kind confusing? There is a short end with an arrow tip on it which only rotates in the interier of the dial and a long end that overlays the measurement numbers.... Which is the true measurement on the dial? Thanks again!
     
  6. britz

    britz Well-Known Member

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    Technically speaking, you want to measure with the inside of the jaws when possible because the farther you get from the "main beam" ( the part where the two jaws are connected) the more chance there is for slop in the connection to play a role in measurement differences.

    practically speaking, with most stainless steal dial calipers, the is no difference ;)

    you should pay more attention to the amount of pressure you put on the caliper when taking a reading.
     
  7. boomtube

    boomtube Well-Known Member

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    "Do I set the long end of the needle at zero or the short end with the arrow?? It's kind confusing?"

    Well, you can do it as you wish. I want to make reading it as easy and accurate as possible and that means putting the long end of the needle on zero for me.
     
  8. mark308

    mark308 Well-Known Member

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    spino, if you dont know which end of the needle to zero or how to use, please stop what ever you are doing and get some help from a shop teacher, machinist, etc. your lack of knowledege can get you hurt when reloading bullets. :)