GB/T 10609.4-1989
AbolishedTechnical drawings--Requirements for microcopying
技术制图 对缩微复制原件的要求
Application Summary AI generated
This standard specifies the requirements for technical drawings used as originals for microcopying, including line thickness, lettering size, and contrast levels. It is applied in engineering and manufacturing industries where technical drawings must be reduced to microfilm for archival storage or distribution. The standard ensures that microcopied reproductions remain legible and accurate for long-term reference and retrieval.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.