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ISO 3135:2025
International Standard
Marking pens — Durability of written line — Documentary use (DOC)
ISO 9177-2:2022
International Standard
Mechanical pencils for technical drawings — Part 2: Black leads — Classification and dimensions
ISO 9177-3:2022
International Standard
Mechanical pencils for technical drawings — Part 3: Black leads — Bending strengths of HB leads
ISO 20318-2:2019
International Standard
Mechanical pencils and leads for general use — Classification, dimensions, quality and test methods — Part 2: Black leads
ISO 20318-1:2019
International Standard
Mechanical pencils and leads for general use — Classification, dimensions, quality and test methods — Part 1: Mechanical pencils
ISO 9957-2:2019
International Standard
Fluid draughting media — Part 2: Water-based non-India ink — Requirements and test conditions
OS GSO ISO 9961:2017
ISO 9961:1992
Omani Standard
Draughting media for technical drawings -- Natural tracing paper
GSO ISO 9961:2017
ISO 9961:1992
Gulf Standard
Draughting media for technical drawings -- Natural tracing paper
GSO ISO 9957-3:2016
ISO 9957-3:1997
Gulf Standard
Fluid draughting media -- Part 3: Water-based coloured draughting inks -- Requirements and test conditions
ISO 9177-1:2016
International Standard
Mechanical pencils for technical drawings — Part 1: Classification, dimensions, performance requirements and testing
ISO 12756:2016
International Standard
Drawing and writing instruments — Ball point pens and roller ball pens — Vocabulary
OS GSO ISO 9175-1:2016
ISO 9175-1:1988
Omani Standard
Tubular tips for hand-held technical pens using India ink on tracing paper -- Part 1: Definitions, dimensions, designation and marking