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Thread: Indicating micrometer?

  1. #16
    Join Date
    Oct 2019
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    564
    i bought 4 mitutoyo mic's on a vacation uncle sam provided.
    outside of tokyo in an open air market.
    early 70's.......
    naw you do not want to know how little i paid for the 4. with cases, and digital on small one. carbide faces and standards with all.

    Quote Originally Posted by TrxR View Post
    I guess i dont. I was over thinking this. I just ordered a new mic and caliper set as my cheap calibers were dying anyways .

    Its got a Mitutoyo 293-340-30 Mic and 500-196-30 calipers.

  2. #17
    Join Date
    Mar 2009
    Posts
    311
    Quote Originally Posted by rsmithsr View Post
    i bought 4 mitutoyo mic's on a vacation uncle sam provided.
    outside of tokyo in an open air market.
    early 70's.......
    naw you do not want to know how little i paid for the 4. with cases, and digital on small one. carbide faces and standards with all.
    Im hoping these will serve me well. They are both digital come with a hardwood case and the mic has carbide faces. Ive seen nothing but good reviews on them.

    Are standards a good thing to look into having? If so what size?

  3. #18
    Join Date
    Oct 2019
    Posts
    564
    typically the smaller of the mic size.
    a 0-1 has none, zero on zero
    a 1-2 has a 1.0000
    2-3 has a 2.0000
    etc
    Quote Originally Posted by TrxR View Post
    Im hoping these will serve me well. They are both digital come with a hardwood case and the mic has carbide faces. Ive seen nothing but good reviews on them.

    Are standards a good thing to look into having? If so what size?

  4. #19
    Join Date
    Jul 2005
    Posts
    628
    Quote Originally Posted by TrxR View Post
    Im hoping these will serve me well. They are both digital come with a hardwood case and the mic has carbide faces. Ive seen nothing but good reviews on them.

    Are standards a good thing to look into having? If so what size?
    I actually like the plastic cases better.

    And always leave the jaws open a few hundredths the when putting it away.
    It is going to need some clearance when the temperature changes.
    Last edited by brickeyee; 04-20-2021 at 02:42 PM.

  5. #20
    Join Date
    Mar 2009
    Posts
    311
    Quote Originally Posted by brickeyee View Post
    I actually like the plastic cases better.

    And always leave the jaws open a few hundredths the when putting it away.
    It is going to need some clearance when the temperature changes.
    Thanks i believe im getting the plastic cases as well. And thanks for the tip about leaving the jaws open a little, ive already been doing that but its a good reminder.

  6. #21
    Join Date
    Jan 2009
    Location
    Ca.
    Posts
    851
    If over an inch and you have gauge pins they will also work but not the length but the diameter is what you want reference. Myself I am done digitals and went back to those that are not.

  7. #22
    Join Date
    Jul 2016
    Location
    Surprise, AZ
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    Ive done this too

    Quote Originally Posted by Louis.J View Post
    If over an inch and you have gauge pins they will also work but not the length but the diameter is what you want reference. Myself I am done digitals and went back to those that are not.
    BUT, I think the reason the "real" standards are full-scale is to detect any distortion in the threaded rod at the heart of the thing - if it's bent or stretched that should show up on a full-range measurement, but might not on something smaller. So, if your standard is larger than the thing you are trying to measure, you're probably OK, if it's smaller there's some risk. (Though not much if you take care of your tools...)

    GsT

  8. #23
    Join Date
    Jan 2009
    Location
    Ca.
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    851
    Thanks Gene and a great point. Do you happen to know if guage pins are also ground to an exacting length.

  9. #24
    Join Date
    Jul 2016
    Location
    Surprise, AZ
    Posts
    329
    Quote Originally Posted by Louis.J View Post
    Thanks Gene and a great point. Do you happen to know if guage pins are also ground to an exacting length.
    I doubt they are - I've never seen a tolerance spec on the length, which would presumably be stated if they were.

    GsT

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