On a drawing, what is used to record any changes to the drawing?

• A. Revision Block
• B. Title Block
• C. Dimension Lines
• D. Border Margin

Answer: (A)

Recording changes to a drawing is handled by the revision block. This area keeps a historical log of edits, usually showing the revision identifier, the date of the change, who approved it, and a brief description of what was altered. It gives a clear, at-a-glance record of how the drawing has evolved and ensures everyone is working from the most current version. The title block provides general drawing information, not modification history; dimension lines show measurements, and the border margin is simply the drawing’s frame. So the revision block is the designated place for documenting changes.