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Liner dim. and rounding

I have a question guys. When the drawing callout is to 3 decimal places example 1.000 +/-.005, for part acceptance should be rounded off to 3 decimal as well or not? if the actual is .9946, can it be reported as .995?

I am looking for something in the standard y14.5 -94/2009 , PWA360 or really any other where it would explain how dimension should be reported and to how many decimals.

I've been reading some older threads, and came across a statement that explains per y14.5-2009 that all linear dim. are absolute regardless of number of decimal used as if they did continued with zeroes. So, if my interpretation of this statement is correct, then for the dim 1.000 +/.005 with a 10:1 resolution rule (of the tolerance), I would have to measure the feature to 3 decimal, and with an actual being .995 not .9946 ?

However if I have a dim 1.000 +/-.002, using the same 10:1 rule, I would then have to measure the feature to .0002 resolution, and with actual being .9946, it would make it OOT correct? and I cannot report it as .995 right?
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  • You can change the output....
    Put the curser above the dimension
    Press enter to start a new line
    Start typing "DISPLAYPRECISION" and when it pops up..hit tab to put the code in your edit window. Then put the number you want (how many decimal places it will show/round to)

    If something was really 0.9994 and you had a "DISPLAYPRECISON/3" command in there...PCD would report 0.999


    That being said.....listen to the warnings above. You don't want to put your company in a bad spot.
Reply
  • You can change the output....
    Put the curser above the dimension
    Press enter to start a new line
    Start typing "DISPLAYPRECISION" and when it pops up..hit tab to put the code in your edit window. Then put the number you want (how many decimal places it will show/round to)

    If something was really 0.9994 and you had a "DISPLAYPRECISON/3" command in there...PCD would report 0.999


    That being said.....listen to the warnings above. You don't want to put your company in a bad spot.
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