Now that TechSec has been released on the BlenderMarket here, I'm going to start posting here answers to general queries I get, and in this post talk a little bit about future developments. The main thing I am working on right now is dimensions.
Dimensions so far can be applied to dedicated Blender mesh objects, and to faces of cuttable objects. The latter is probably an easier and more intuitive method but it is proving to be hard to make this interactive as Blender does not allow properties at face level.
In the image below the dimension on the left is associated with a (hidden) Blender mesh plane. These dimensions allow measurements across different cuttable objects. The dimensions around the construction elements are associated with the element faces and change in size and distance depending on how much of the cuttable object is bisected by the section plane.