AutoCAD

How To Lock Dimension In AutoCAD?

Understanding Dimension Locking in AutoCAD

Locking dimensions in AutoCAD ensures that specific measurements are preserved, enabling users to maintain design integrity. This process is straightforward and involves a few essential steps.

Steps to Lock a Dimension in AutoCAD

  1. Select the Dimension:
    Begin by identifying the dimension that you wish to lock. Click directly on the dimension line or its associated text to select it.

  2. Access the Properties Panel:
    With the dimension selected, look to the right side of your interface and locate the Properties panel. If this panel isn’t visible, you can activate it by typing PROPERTIES in the command line and pressing Enter.

  3. Modify the Dimension Properties:
    In the Properties panel, scroll to find the section related to Dimensions. Look for an option labeled "Lock."

  4. Enable the Lock Feature:
    Change the Lock option from ‘No’ to ‘Yes.’ This action will lock the dimension, preventing any adjustments while allowing you to maintain the original measurement.

  5. Confirm Your Changes:
    After setting the lock, ensure to click outside of the Properties panel or hit Enter to confirm your adjustments are saved. The dimension should now reflect its locked status.

Additional Dimension Control Techniques

  • Using Dimension Styles:
    AutoCAD allows you to create dimension styles that can include locking. Access the Dimension Style Manager through the Annotate tab, and modify your styles as needed.

  • Text Size Adjustment:
    You may also need to override the text size associated with your dimensions for clarity. Select the dimension and navigate to the AEC Dimension tab, where you can choose the option to modify the text size.

  • Dimension Overriding:
    If changes in visual presentation are required without altering the measurement itself, consider using the override feature. Select your dimension, open the Dimension Style Manager, and choose to override the current style.

Frequently Asked Questions

  1. Can I lock multiple dimensions at once?
    Yes, select multiple dimensions by holding down the Shift key while clicking each one. Then access the Properties panel and change the Lock option as described.

  2. What happens if I need to make adjustments to a locked dimension?
    To adjust a locked dimension, you’ll first need to unlock it by following the same steps and setting the Lock option back to ‘No.’ After making your adjustments, you can relock it if desired.

  3. Is locking dimensions available in all versions of AutoCAD?
    The ability to lock dimensions is a standard feature and is available in AutoCAD 2025 and later. Always check for compatibility with earlier versions if necessary.

About the author

Wei Zhang

Wei Zhang

Wei Zhang is a renowned figure in the CAD (Computer-Aided Design) industry in Canada, with over 30 years of experience spanning his native China and Canada. As the founder of a CAD training center, Wei has been instrumental in shaping the skills of hundreds of technicians and engineers in technical drawing and CAD software applications. He is a certified developer with Autodesk, demonstrating his deep expertise and commitment to staying at the forefront of CAD technology. Wei’s passion for education and technology has not only made him a respected educator but also a key player in advancing CAD methodologies in various engineering sectors. His contributions have significantly impacted the way CAD is taught and applied in the professional world, bridging the gap between traditional drafting techniques and modern digital solutions.