Multi View Sketching

Construction lines help you construct the rest of your drawing in the very beginning.  Object lines are the heavy lines that actually outline the structure.  Hidden lines show the features of the object that are not visible from a certain view.  Center lines represent axes and axes points with cylindrical objects.  The examples are isometric drawings.  Building professionals prefer multi view drawings over pictorial be cause they are easier to understand.  They show, very simply, the view from each side.