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TECH request. How do you read a venier caliper?

Discussion in 'The Hokey Ass Message Board' started by Frank, Nov 21, 2007.

  1. Frank
    Joined: Jul 30, 2004
    Posts: 2,325

    Frank
    Member

    I googled a lot first, but all I keep finding is how to use a metric venier caliper. Mine is strictly standard. So I humbly ask the HAMB, can someone tell me the correct way to read one of these?
     
  2. Thorkle Rod
    Joined: May 24, 2006
    Posts: 1,392

    Thorkle Rod
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    Can post a pictureare they Dial cailpers or ? It's pretty much the same as reading any micrometer, Maybe I don't understand the question?
     
  3. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

    Metric is the same principle as Imperial,it's based on the decimal system.

    Post a close up pic. Been a while,but I can probably explain it.
     
  4. UK Comet
    Joined: Nov 16, 2006
    Posts: 228

    UK Comet
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  5. Thorkle Rod
    Joined: May 24, 2006
    Posts: 1,392

    Thorkle Rod
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  6. Frank
    Joined: Jul 30, 2004
    Posts: 2,325

    Frank
    Member

    dial type. Like this:
     

    Attached Files:

  7. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

  8. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

    "Vernier" refers to the scale with all the little tiny lines on it.
    Dial Calipers are different.

    Is one turn on the dial .100" or .200" ?

    The good ones are .100",much easier to read accurately.

    The cheap ones are .200".
     
  9. Asphalt Outlaw Hero
    Joined: Dec 9, 2006
    Posts: 963

    Asphalt Outlaw Hero
    Member
    from Dixie

    I just get one with a digital readout:D .
     
  10. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

    Search for: how to read dial calipers inches
     
  11. hotrodbrad
    Joined: Apr 21, 2006
    Posts: 180

    hotrodbrad
    Member
    from Tempe, AZ

    for a caliper like that you read the inch and tenth of an inch straight off the slide, then add what is shown on the dial
     
  12. SinisterCustom
    Joined: Feb 18, 2004
    Posts: 8,277

    SinisterCustom
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  13. pitman
    Joined: May 14, 2006
    Posts: 5,148

    pitman

    Josh, looks good. I always took the closest line pair, and recall adding the small digit value (of this aligned pair of lines), to the "lower" large value on the bigger scale. Ex: .300 (lower large value) plus .018 (properly read "aligned" contribution) yields .318"
     
  14. 36Brua
    Joined: Jul 31, 2007
    Posts: 87

    36Brua
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    IMHO digital instruments are great ..until the battery goes dead
     
  15. Digital is ok, but when you know how to read calipers etc, the old fashion way, you'd be surprised how easy it is, just like reading a tape measure, but then again most people don't know how to read a tape measure either.
     
  16. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

    Or you drop them.
     
  17. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,961

    Roothawg
    Member

    The easiest way to explain decimal conversion is to use money as an example.

    3/4"= 75 cents .750, 1/2= 50 cents or .500

    I know it's elementary but it's handy.
     
  18. squirrel
    Joined: Sep 23, 2004
    Posts: 59,928

    squirrel
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    Actually the answer is: Very carefully

    somewhere around here I have a text that explains it for US measurement type calipers.
     
  19. FuelFC
    Joined: Feb 12, 2003
    Posts: 764

    FuelFC
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    Damn crescent wrenches anyways.
     
  20. squirrel
    Joined: Sep 23, 2004
    Posts: 59,928

    squirrel
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    I did find some old pages in a machine shop textbook, sent a link to Frank. if anyone else wants it please PM me! this is for the old style vernier caliper with 1/40" scale
     
  21. eaglebeak
    Joined: Sep 17, 2007
    Posts: 1,302

    eaglebeak
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  22. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

    Actually .500 doesn't mean anything,in Metric or Imperial,
    because the units are not specified.

    It could be .500 mm,Liters,Meters,Newtons,KPA,
    Inches,Feet,Yards,Gallons,seconds,etc.
    ------
    The principle of reading a vernier scale
    IS the same for Imperial and Metric.

    Which is irrelevant,because he wants to read a Dial Caliper.
     
  23. eaglebeak
    Joined: Sep 17, 2007
    Posts: 1,302

    eaglebeak
    Member

    Ah yes, I stand corrected.
    As I stated, "But you are correct, the principle is the same.
    Anyway, you in the YSA spell all metric words wrong.
    A meter is an instrument used for measuring.
    A METRE is a unit of measurement.
    LITER is something to light a cigarette. I know....
    LITRE is METRIC.
     
  24. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian


    Ever heard the saying:
    "We don't care how they do things in Europe" ?
     
  25. Frank
    Joined: Jul 30, 2004
    Posts: 2,325

    Frank
    Member

    Thanks everyone. Thanks for the links, Squirrel.

    I thought it was called a vernier because when I googled it, I kept seeing the same kind like I have.

    I just need a cheat sheet or get better with my math converting decimal to fractions.

    For instance, I was measuring a threaded fitting and didn't know the diameter. Since when you go hunting some parts you have to know the fractional size, I was trying to figure out what it equates to. Guess I need to dust off a high-scho...I mean elementary math book. :)
     
  26. squirrel
    Joined: Sep 23, 2004
    Posts: 59,928

    squirrel
    Member

    if you have a decimal number (like 0.344) just multiply it by 8 and 16 and 32 to get the fraction...see which one comes out close to a whole number, and that's your fraction equivalent. In this case you get 11.008 when you multiply by 32, so it's 11/32
     
  27. ray
    Joined: Jun 25, 2001
    Posts: 3,798

    ray
    Member
    from colorado

    go to your local or mailorder machine tool supply company for a large decimal equivalent chart. i use them all the time, in any machine shop you'll see 20 or more of em on the walls, you don't think we memorize all that ****, do ya?:D

     
  28. FuelFC
    Joined: Feb 12, 2003
    Posts: 764

    FuelFC
    Member

    Frank you have e-mail. I sent you a complete conversion chart std/metric and fractions! Check your inbox.
     
  29. FuelFC
    Joined: Feb 12, 2003
    Posts: 764

    FuelFC
    Member

  30. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

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