Before the advent of AutoCAD and other CAD/BIM drafting software, engineering drawings were crafted on large sheets of paper. The specialized equipment used to create these drawings included; drawing boards, different grades of pens and pencils, erasers, T-squares, set squares, compasses and tracing paper to name but just a few. One major disadvantage of an only paper-based drafting process is you can not easily change the drawing after it has been committed to paper… Continue reading article at rarehistoricalphotos.com
