DIN ISO 9175-1:1990 Tubular tips for hand-held technical pen using india ink; definitions, dimensions, designation and marking; identical with ISO 9175-1:1988
This standard specifies dimensions for tabular tips for hand-held technical pens using india ink on tracing paper, irrespective of their design and manufacture, to ensure consistent line thickness within predetermined specifications, with or without lettering guides and templates.#,,#
DIN ISO 9175-1:1990 history
1990DIN ISO 9175-1:1990 Tubular tips for hand-held technical pen using india ink; definitions, dimensions, designation and marking; identical with ISO 9175-1:1988