Iso 2768 !!link!!

General tolerances for form and position are given for grades (H = precision, L = very coarse). Applies to features like:

Both manufacturers and buyers have a shared understanding of what constitutes an acceptable tolerance for non-critical features. iso 2768

Mr. Henderson leaned forward, his eyes narrowing. "Medium tolerance for linear dimensions, Coarse for geometric? Why coarse?" General tolerances for form and position are given

He pointed to the title block. "I’ve designated the general tolerances as ." iso 2768