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when you take a picture make sure you have something you can refernce from in the picture.....even if its just a dime or quarter.
Then take a caliper and measure the width of the quarter. then take a measurement of the plug in the same pic....find out how many "Quarters" there are that measurement.
Then take a caliper to a real quarter and multiply it by the number of "Quarters you got for a measurement.
You can do it for length and width......you can also do it to find when tapers start and such....
Hope this helps....It made sense while I was typing it at least
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