Dual dimensioning rounding ?s / is it legal to say "dims in brackets are for reference only&quo 6

[ingallspw]

Is it "legal" to call out your secondary dual dimension as "REFERENCE ONLY" ?

If not is there a standard that forces you to use a set amount of decimal places in your dual dimension?

We have metric dimensions that are technically tighter than the English and vice versa that may cause someone to reject a part due to rounding of the two.

I realize dual dimensioning is not everyone's favorite so thanks for bearing with me.

 

[looslib]

There are certain items that are defined by a standard in a unit of measure. these items should NEVER be converted. Screw threads is one that has 2 standards, one in imperial units and one in metric units. They each stand alone. Also, the hole size/drill should be in the units of the standard.

If I want a 1/4-20 hole by .75" deep thread with a .201(#7) hole to 1" deep, that is what goes on my drawing. I don't want to see 6.35-1.27 by 19.05 deep thread with a 5.105 hole to 25.4 deep.



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