How to Dimension in 1/3 fractions instead of 1/2, 1/4, 1/8, 1/16 etc...

[Anonymous]

When I dimension I want AutoCAD to show 0.3333333 as 1/3.  However whenever I dimension I only get dimensions that are powers of "2" such as 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, or 1/256.  I want fractions that are not a power of two.  Like 1/3, 2/3, 1/5, 1/7 etc... How do I make AutoCAD show these different fractions when I dimension?  Thank you.

[Kent1Cooper]

Only with override text content, as far as I know.

Significant complications arise in trying to do what you're asking.  For example, in its standard way with power-of-2 denominators, you tell it what precision to round to, for example to the nearest 1/16".  If it could do just any  kind of denominator, how could you designate a rounding value?  What if the actual measurement is, for example, 0.2929?  Should that be shown as 2/7 [0.2857ish], or 3/10 [0.3], or 18/61 [0.2951ish], or 29/99 [0.292929...], or ...?

It would be possible to make a routine to show [by text-content override] fractions to the nearest you-specify-the-denominator  value, such as to the nearest 1/7, or the nearest 1/37, or whatever you choose.  But I think you would have to specify  the denominator -- having it choose the "right" one from all  possibilities seems beyond all possibility to me.

[Anonymous]

I was hoping for a way besides override.  Too bad that you cannot pick/select the power of the denominator for fractions.  Like precision why can I not pick powers of 3, 5, 7, etc...?  It would seem in this day of age with the computers that exist, the computer should be able to find the exact fraction or be able to do different powers in the denominator.

I understand that in manufacturing and machining the tradesmen use 1/2, 1/4, 1/8, 1/16, 1/32, 1/64 etc... But not everyone uses power of two denominators and it would be nice to specify other fractions.