Power 2024 Asme Y14.5. I believe since 2009 to present, all y14.5 standards prohibit locating features of size with plus/minus tolerances and require the use of a position feature control frame. โ this standard establishes symbols, rules, definitions, requirements, defaults, and recommended practices for stating and interpreting dimensioning, tolerancing, and related requirements for use on engineering drawings, models defined in digital data files, and related documents.
Joining asme is the most important connection a current or future mechanical engineer can make. Per the standard i can do 3x w x l x depth but then i have to add a second note to the slot 2x r (which means rull radius slot).