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How often do you measure over 12"?

Discussion in 'METROLOGY - MEASURE, SETUP & FIT' started by NCjeeper, Apr 27, 2017.

  1. NCjeeper

    NCjeeper United States H-M Supporter - Premium Content H-M Supporter-Premium

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    My mics and calipers go up to 12" and I hadn't needed to take a precision measurement over 12" so far in the last few years of home shop machining. Just wondering if its worth picking up a 18" or 24" caliper for the off chance I may need one. Just don't want to spend money on tools I may never use. For those that own larger measuring tools how often do you use them?
     
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  2. David S

    David S Canada Active User H-M Supporter-Premium

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    Just a hobbyist here, but I have never needed more than my 8" calipers.

    David
     
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  3. T Bredehoft

    T Bredehoft Active User H-M Supporter-Premium

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    I have used my 12" calipers in the last 4 years, but only once.
     
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  4. chips&more

    chips&more United States Active User Active Member

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    A true toolaholic would not be asking this question! A true toolaholic would already own one!!!
    caliper.jpg
     
    Last edited: Apr 27, 2017
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  5. Charles Spencer

    Charles Spencer Active User H-M Supporter-Premium

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    I have micrometers up to 13". I haven't used any over 6" in the last four years. I have an 18" rule and a 36" Lufkin rule. They are accurate enough for work of that size that I do.
     
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  6. rgray

    rgray Active User H-M Supporter-Premium

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    I have a set of 12" calipers. Haven't used them for years.
    I have micrometers to 5" and haven't used a 4 or 5 in a long time.
    A friend of mine with a tractor repair shop bought a set of mitutoyo mics from 0-12" and was very proud of them.
    I was looking at them and thinking to myself "at least there are 3 in the set that might get used"
    Usually hoping I don't need to measure anything that big that accurately.
     
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  7. pstemari

    pstemari H-M Supporter - Premium Content H-M Supporter-Premium

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    I have 12" vernier calipers I use fairly often, but it's because I love how they feel and they are considerably more rigid than typical dial calipers.

    I seldom measure anything longer than 3" to any serious degree of accuracy.

    Sent from my Nexus 6 using Tapatalk
     
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  8. NCjeeper

    NCjeeper United States H-M Supporter - Premium Content H-M Supporter-Premium

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    I agree. Just that I cant afford everything I see. :congratulate:
     
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  9. Rustrp

    Rustrp United States Active Member Active Member

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    I'm really surprized you didn't get more, oh sure, absolutely, you will need them when that big job comes along, and you will never be able to get by without an 18"-24" so go ahead and Super Size to a 36". :big grin::big grin:

    Go with the vernier scale and then it doesn't matter how long it waits to measure something, it will always be ready.
    http://www.starrett.com/metrology/p...-Hand-Tools/Precision-Measuring-Tools/123z-36

    Edit; It's always good for a chuckle when I visit my friends shop and I can't resist running my finger through the dust of the wood case for his 72".
     
    Last edited: Apr 27, 2017
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  10. ch2co

    ch2co United States Grumpy Old Man H-M Supporter-Premium

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    My longest is a 12" Mitutoyo dial caliper which I take out of its box every now and then. Glad I have it.
    What do you guys do to accurately measure something longer than the longest caliper or micrometer in your tool box.
    I was thinking of trying to do-it-yourself with a DRO turned into a caliper. Any other suggestions for a small home shop?

    Grumpy
     
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  11. T Bredehoft

    T Bredehoft Active User H-M Supporter-Premium

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    My 36" vernier caliper, (.025 scale) hasn't been used since before I retired in 2000., Yes, it's wooden case is dusty.
     
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  12. dlane

    dlane Active User H-M Supporter-Premium

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    I have a super accurate yard stick
    IMG_0281.JPG IMG_0284.JPG
    Some day I'll figure a way to mount on my SB10L or ?
     
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  13. ch2co

    ch2co United States Grumpy Old Man H-M Supporter-Premium

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    DLANE Where did you get such beast? Thats really cool. Is it actually a yard long? What type of end piece does the scale have on it?

    Grumpy
     
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  14. NCjeeper

    NCjeeper United States H-M Supporter - Premium Content H-M Supporter-Premium

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    Shars has a 24" vernier for 60 bucks. I may grab that.
     
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  15. Rustrp

    Rustrp United States Active Member Active Member

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  16. scwhite

    scwhite United States Active Member Active Member

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    I wish I had some 12" vernier calipers starrett 123
    They are better that dial calipers but far .
     
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  17. f350ca

    f350ca Canada Active User Active Member

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    My mic's only go to 6 inch, very seldom need high precision above that but have a 24 inch Fowler dial caliber that gets used a few times a year.

    Greg
     
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  18. randyjaco

    randyjaco Reserved Active User H-M Supporter-Premium

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    I use my 24" calipers about once a month. When I have to, they are worth their weight in gold. I also have 18s, 12s, 8s and 6s.

    Randy
     
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  19. dlane

    dlane Active User H-M Supporter-Premium

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    It is 3' , not sure what it came off ov, it has shcs's on the ends
    And is built rite :cool:
     
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  20. joe350r2

    joe350r2 United States Iron Registered Member

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    I carry a 12" caliper with me as I travel to set up clamps on bottle making machines, but what prompted my input to this thread was an ex- engineer I worked with would regularly specify dimensions in excess of 100" to 4 decimal places. For a part that in times past would have been laid out with a tape measure

    Sent from my SM-G920V using Tapatalk
     
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  21. Silverbullet

    Silverbullet Active Member Active Member

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    Oh you have the money , you gotta have the biggest YA can. At least 36" minimum 24" . But I'm a toolaholic and have to many tools or do I .
     
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  22. 4gsr

    4gsr Global Moderator Staff Member H-M Supporter-Premium

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    I have mikes up to 16" left over from dad's shop. I have not used any one of them over 9" since we shut the shop down in 2003. I do have digital and dial calipers up to 12" and they get used quite often. Also have vernier calipers up to 40" and they get used about once a year. Will I get rid of any of them? Probably not. Let my kids deal with that after I'm gone.
     
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  23. darkzero

    darkzero Global Moderator Staff Member H-M Supporter-Premium

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    My largest mic is a 6" also. I really don't have the need for accuracy better than a couple thou for larger than that. I regularly use a 6" caliper, digital too. I use calipers for quick & easy measurements. But I do have 12" & 18" Mitutoyo vernier calipers in wooden cases.

    I was fine with the 12" but recently had to measure something that was 15" long. Came across the 18" so I picked it up. They don't get used often so vernier was fine with me & I got them for great prices anyway.

    When I was bidding on the 18" I was also bidding on a 60" Mitu vernier. Price got to high so I backed out. I probably would have never used it anyway.
     
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  24. uncle harry

    uncle harry United States Active User Active Member

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    I have a 12" dial caliper that I have used once in 8 years. A couple decades ago while visiting a vendor in Springfield MA I was shown a seven foot vernier unit that they were required to have in order to bid on military jobs. I didn't ask how often it was used.
     
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  25. mzayd3

    mzayd3 Active User Active Member

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    I have only used my 12" dial caliper twice in several years. For large stuff, you could possibly get by with plain calipers, if you are fitting in piece to another and both are on hand.


    Sent from my iPhone using Tapatalk
     
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  26. Ulma Doctor

    Ulma Doctor Infinitely Curious Active Member

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    i gotta get my game together, the largest calipers i have are 8" :oops:
    i really don't machine stuff larger than 6" in diameter, but larger calipers may come in handy sometime :grin big:
     
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  27. scwhite

    scwhite United States Active Member Active Member

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    If I had a set of 12" Vernier calipers starrett 123 master bar
    I would use them every time I needed them
    I got my 8-1/2" calipers and my 14-1/2" vernier
    123 both sets .
     

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    Last edited: May 10, 2017
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  28. BGHansen

    BGHansen United States H-M Supporter - Premium Content H-M Supporter-Premium

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    I've got a 24" calipers that's been used once. Have 12" calipers (dial type) at two lathes and a mill. Have digital 12" at the two lathes. Have 8" digitals at each machine; also 6" dial/digital and 4" 'ers.

    Bruce
     
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  29. Rustrp

    Rustrp United States Active Member Active Member

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    At the company picnic the engineer would be in the process of explaining the project; He stops mid sentence and says to my coworker and I who were sitting across the table, "you guys don't even do that" as we shake our heads no. Must have been our facial expressions. :)
     
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  30. Rustrp

    Rustrp United States Active Member Active Member

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    I'm questioning if it came off of anything and Built-Rite probably isn't in the tool making business anymore. The positive is they are still in the US making tool and die products specific to the injection mould industry. Maybe the screws in the ends are just to keep the vernier scale on. Leave it outside tonight and I'll come by to inspect it. :big grin:

    Edit; I'm surprised I can't find any information on it. It is a nice measuring tool and I could see it mounted to the lathe but I think it would have more uses otherwise.
     
    Last edited: Apr 28, 2017
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