ISO 286-1:2010(en), Geometrical product specifications (GPS)
: Specifically used for defining the allowable deviations (tolerances) for internal cylindrical dimensions, such as drilled or bored holes. din 7161 pdf extra quality
For archival purposes, technical documents and limited previews of the original 1965 version can be found on community sharing platforms like Comparison: DIN 7161 vs. DIN ISO 286-2 din 7161 pdf extra quality