Is 3 usually written as 3# or #3?
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Is the number 3 in the drawings usually written as 3# or #3? Which standard specifies this notation?
It’s all just a matter of convention; there’s no standard that specifies this way of writing, right?
No relevant standards or specifications seem to exist; *it’s still 3# by convention.
We* usually write it as 3#, and this depends on individual* preference; I’ve never seen any specific requirements regarding this