====== Ordinate Dimensions ======
**Question:**
How do I place the //origin// or "corner" for the Ordinate Dimension?

The approach that Rhino takes is to create these ordinate dimensions in the active detail or on the model.
  * The ordinate dimension uses the //current cplane//.
  * You can set the cplane origin to the corner of the geometry that you will be dimensioning to.
  * To make a construction plane, use the [[https://docs.mcneel.com/rhino/8/help/en-us/commands/cplane.htm#(null)|Cplane]] command with the 3PT option or other preferred options.
  * Use **NamesCplanes** to save your **cplane** and restore the cplance for additional dimensions or editing. 
  {{ :rhino:annotations:named_cplanes_02.png?600 |}}
  * The layout arranges details that contain views of your objects and ordinate dimensions.
  * If you need to edit the location of the geometry, make the cplane active before moving the geometry.
  See video [[https://mcneel.s3.amazonaws.com/misc/tech_support/Videos/move%20ordinate%20cplane.mp4|here]].

Download sample (Rhino 7) file [[https://mcneel.s3.amazonaws.com/misc/tech_support/Videos/V7%20ORD%20Test.3dm|here]].