I’ve produced a large number of technical illustrations for various training documents and textbooks. Sometimes this is updating an outdated black and white line drawing as a new full-colour vector, sometimes it’s redrawing something out of a standard in order to demonstrate a particular point, and they vary from cross sections and cutaways to simplified images to demonstrate a fact or function. I’ve also drawn more graphs than I can count! Below is a small selection. Please note the legends have been removed to protect the owners.