I'm an interior architect who was fortunately trained in hand drafting shortly before it was phased out in favor of CAD. I use CAD exclusively at work now, but I do still enjoy creating technical drawings and sketching on my own time. I have a Rotring 800 that I purchased about 6 years ago that I enjoy, but I know there's a whole world of mechanical pencils out there. Does anyone here use them? Let me know what you're carrying, and share some pics if you don't mind.