@pbacot said: I must have missed the point. I didn't realize OP was looking to dimension the existing sides @dbwill said: The model has rounded corners and it makes it a little difficult to get accurate measurements for a side panel. Seems more important to learn how to get dimensions from a model as is rather than redrawing it square to get the measurements. By turning on hidden geometry you get edges that you can snap the dimension tool to more easily.