Given either inches or millimeters, gives the closest inches in fraction form
Given either inches or millimeters, calculates the closest inches in fraction form, round up or down.
Why? Well have you ever been at the store and your project needs a 10mm bolt but you can't find it in metric. Take out Length Fraction Calculator type in 10mm and you find that you either need a 3/8" bolt if you want to go smaller or a 7/16" bolt if you need the next size up.
Also great if you have a digital caliper and it gives you numbers like 3.2423".
https://github.com/joeferner/android-lengthFractionCalculator
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