Due to our legacy products and primary vendor preferences, I have been typically working in inches (sometimes with dual dimensions), using the ANSI standard as primary. I am interested in gradually making the conversion to metric (especially for new products) and have been playing with the ISO dimensioning standard as my primary units. When using ANSI dimensioning, default tolerances are generally covered by notes in the title block (i.e. for all .xx two-place decimals the tolerance is +/-.010", .xxx three-place decimals are +/-.005", etc.). Can anyone tell me how this is handled with ISO dimensioning??
Example: By default, a diameter of 50.02mm would show up as '50.02' on an ISO drawing, assuming you had your default place value set to two- place decimals. However, a 50mm feature shows up on the drawing as '50' regardless of the place value you set. I understand this is the ISO standard, but then how do you know what the default allowable tolerance is for that feature? Surely, you wouldn't need to apply a specific tolerance to every dimension?
Any advice to a metric newbie would be appreciated!
-JOSH