ISO 128-21:1997
Technical drawings - General principles of presentation - Part 21: Preparation of lines by CAD systems

Standard No.

ISO 128-21:1997

Release Date

1997

Published By

International Organization for Standardization (ISO)

Latest

ISO 128-21:1997

Scope

Specifies procedures for the calculation of the most important basic types of non-continuous lines according to ISO 128-20 and their line elements.

ISO 128-21:1997 history

• 1997 ISO 128-21:1997 Technical drawings - General principles of presentation - Part 21: Preparation of lines by CAD systems