ISO 129-1:2018/Amd 1:2020

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ISO 129-1:2018/Amd 1:2020 is an amendment to an existing international standard that provides general principles for presenting dimensions and tolerances on technical drawings. Specifically, it focuses on the presentation of dimensions and their associated tolerances in 2D technical drawings, applicable across various disciplines and trades, and can also be applied to 3D applications. This amendment introduces new elements like property indicators, developed length, surface indicators, and flag notes to enhance clarity and consistency in technical product documentation, according to ISO.