I am a student at Bournemouth University studying Product design, and to be honest whenever there is a project set on our course there is always a mad scramble to the libary to make sure you get a copy of 'Bodyspace'. There are other books in the libary on ergonomics and anthropometrics, but they are all very dated or 'sketchy' about the subject - 'Bodyspace' sumerises very well the underlying facts about ergonomics, in an easy yet informative (and very useable) way. If you are a designer, your products will nearly always have some form of human interation - whether it is from manufacture or the end use. A designer should always have at least a knowledge about ergonomics, after all if you design a workstaion for example that is uncomfortable to sit in and causes repetitive strain - it is a bad design! 'Bodyspace' covers a range of topics - from tool design to correct seating positions as well as anthropometric data (human percentile measurements). Ergonomics is a vast subject, with no right or wrong answers, and no set data as humans are constantly evolving in shape - but for a fundimental guide 'Bodyspace' by Stephen Pheasant is very good.