I wanted a way to create parts diagrams with measurements directly from OpenSCAD. I suspect others have done this already, but I couldn't find anything. So I created a library. Just add measurements based on your calculations and parameters, set your view orientation, and export as an image (details in the instructions section) I included an example Servo scad that uses the measurements module to create a parts diagram. As an example, I overly use it to show all orientations. Note, this uses write.scad (thing 16193). You may want to download the latest version directly from thingiverse. I just found this link on the openscad website. It has more features than my library, but does seem to limit to top down view. Not that you can't simply move your object to allow for it's use. Anyway, if you like my library, you would probably like this one too. http://www.cannymachines.com/entries/9/openscad_dimensioned_drawings The parameters to the measurement module are : orientation = orientation of measurement line. Values {"horizontal","vertical"} view = side of object. Values {"front","left","right","back","top","bottom"} Note, this is the same view you select in OpenSCAD length = length of measurement text = measurement name (keep short) textpos (optional, defaults to "below") = position of text above or below the line. Values {"above","below"} text_size (optional, defaults to 2) = the size of the text characters in height line_thickness (optional, defaults to .15) = the thickness of the measurement line