What is BS EN ISO 129-1:2019+A1:2021 about?
This international standard is the first in a long-established series on technical product documentation. BS EN ISO 129-1:2019+A1:2021 establishes principles for how dimensions and tolerances are presented in technical drawings.
Who is BS EN ISO 129-1:2019+A1:2021 for?
- Mechanical engineers
- Engineering designers
- Design engineers
Users will most likely work in defence, aerospace, automotive, rail, nuclear and other general manufacturing sectors.
Why should you use BS EN ISO 129-1:2019+A1:2021?
This document establishes the general principles for presenting dimensions and associated tolerances that apply to 2D technical drawings in all disciplines and trades but which can also be applied to 3D applications.
BS EN ISO 129-1:2019+A1:2021 helps design engineers specify their products more accurately and unambiguously, facilitating trade and entry into new markets.
What’s new about BS EN ISO 129-1:2019+A1:2021?
This amendment is a minor correction to one clause and adds two figures to clarify drawing requirements for the presentation of special dimensions. As well, the standard has been adopted and ratified by CEN to become a European standard, hence the EN in BS EN ISO 129-1:2019+A1:2021.