This International Standard specifies the recommended proportions and lays down the dimensions for the symbols used to indicate geometrical tolerancing on technical drawing.
DS/EN ISO 7083:1995 history
2021DS/EN ISO 7083:2021 Technical product documentation – Symbols used in technical product documentation – Proportions and dimensions (ISO 7083:2021)
1995DS/EN ISO 7083:1995 Technical drawings - Symbols for geometrical tolerancing - Proportions and dimensions