From Instapundit, video of a factory. It looks like the late 50s or early 60s. Around 30 seconds in there’s a man using a drafting machine. After learning mechanical drawing with T-square and triangles, I took a summer job where I got to use one of these, and I thought it was fantastic – amazingly faster and better than the old way. Until the late 90s I used drafting machines occasionally, and then took a job using Autocad. After drawing with pencils and pens and using things like this polar planimeter, using a real CAD package was amazingly faster and better than the old way. What’s next – a holodeck? Whatever it is, no doubt it will be amazingly faster and better than those primitive CAD packages from the turn of the century.