When two fractions that are 1/16th different are expressed one of these two fraction is expressed in 16ths the other in 8ths
The sum of the numerators of these two fractions is a number that can be
Expressed as a metric number that would be in the mid range of the two fractions
Example: 9/16 and 5/8 9 plus 5 equal 14
coincidentally a 14 mm wrench is little bigger than 9/16 and little smaller than 5/8
Practical application of this law: calculation of wrench conversion from us standard to metric
does anyone have other methods of determing sizes
this is my method i am sharing with you
it can be done with out a chart is my point sorry if you cant see the question
does anyone have other methods ???

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