The standard covers the former standards DIN 7168 part 1 and part 2 completely under one number. It shall not be used on new drawings. For new drawings DIN ISO 2768 part 1 and part 2 are to be considered.
DIN 7168:1991 history
1991DIN 7168:1991 General tolerances for linear and angular dimensions and geometrical tolerances (not to be used for new designs)