How to Accuratly Measure Between Two Holes

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Introduction: How to Accuratly Measure Between Two Holes

About: I am the co-director, co-founder and lead instructor for the Customs for Urban Teens Program (CUT Program). Started in 2009 we take at risk youth and teach them how to build custom cars. I am a journeyman mach…

So you have two holes and you need to transfer the dimensions to another workpiece. This comes in handy when transfer punches are not able to be used.

Step 1: Measure Hole Sizes.

Now take your vernier calipers and measure both hole sizes. Even if hole was drilled with a certian size bit chances are it is oversized. These holes were drilled with a 3/8" bit. The holes are .378" each....

Step 2: Measure Inside Dimension

So mease the shorest distance between the holes. Mine measures 2.622". Now take one hole measurement and add to distance measurement. Mine will look as such2.622 + .378 = 3My first measurment equals 3" holes center distance.

Step 3: Double Check!!

So if you would like to make double sure.....measure the outside distance between your two holes. Mine is 3.378" . Now take one hole measurement and subtract from total distance. Should look as such3.378 - .378 = 3Again I got a distance of 3"

Step 4: Conclusion

Now you know the handy fast way of measuring between two holes. Hope this helps with future metalworking projects. Enjoy and be safe in your shop!!!

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    11 Discussions

    0
    Nano KiloR
    Nano KiloR

    1 year ago

    Nice article, but when you measuring something, you must get exactly final dimension with one measuring activity. For hole to hole distance you can measure from edge to edge, its give you same result when measuring from center to center.

    0
    cutprogram1
    cutprogram1

    Reply 1 year ago

    I always measure twice to comfirm accuracy. Two direction measuring takes all doubt out of the equation for me

    0
    Caspar
    Caspar

    2 years ago

    If holes are the same size, measure one of them and re-zero the vernier (it must be the digital type). Note that the zero now showing is the distance between 2 fictitious holes, one directly over the other. (Duh!) So now measure the distance from the outer edge of one hole to the outer edge of the second. Voila !

    0
    Pointy
    Pointy

    6 years ago on Introduction

    Given that the holes are the same size I always measure from the distance from one whole hole to the start of the other (red). Measure on the inside of the hole. See picture. That way you get a center reading, without the added calculus (black).

    hevha0n8 kopie.jpg
    0
    rimar2000
    rimar2000

    Reply 6 years ago on Introduction

    Me too, but Carl Blum has a clever method where the holes size does not matter.

    0
    Tex Arcana
    Tex Arcana

    Reply 6 years ago

    this stuff right here

    0
    Pointy
    Pointy

    Reply 6 years ago on Introduction

    Oh, and if a center punch cannot be used: Spin a same size drill as the original hole a couple of turns with the
    original piece up top. That way you get a small indent that you can use
    as a center for your smaller drills. That way you won't even need to measure.

    0
    cutprogram1
    cutprogram1

    Reply 6 years ago

    that is also a good method. thanks for sharing! always nice to have a couple of different ways to do stuff for sure

    0
    Carl Blum
    Carl Blum

    Reply 6 years ago

    Hi: I did this all the time at work reverse engineering parts. I would take the inside difference and add it to the outside difference then divide by 2. Then the hole sizes don't matter. Carl.

    0
    rimar2000
    rimar2000

    Reply 6 years ago on Introduction

    Yes, your method is better. Thanks for sharing.