The revision history on manufacturing drawings is a section that records all changes made to the drawing after its initial creation. It typically includes the revision number, date of the revision, a brief description of the change, and the name or initials of the person who made the change. This helps ensure traceability and transparency throughout the design and manufacturing process, allowing teams to track the evolution of a part or assembly. For example, if a design modification is made to adjust a component's size or material, the revision history will reflect that update, preventing confusion about which version is currently valid. Maintaining a clear revision history is crucial for controlling quality, ensuring consistency, and avoiding errors due to outdated drawings during production.