I use this graphic from http://www.diyaudioandvideo.com/Electronics/Color/ for picking resistors from an E24 set. As a reference guide, the table has a minor problems: there's uniform padding between the value and the colour swatches either side, so it's easy to end up seeking right rather than left from a quantity and locating the wrong component. It could use a re-draw... here's the original:  Another handy document is my favourite ASCII table (oh dear). I use a paper copy at work a couple of times a week, printed from http://frank.harvard.edu/aoe/images/t10r3.pdf It was produced by Cambridge University Press, probably as an appendix to some unknown book, although the web copy is hosted by Harvard. It shows the symmetry (beauty?) in the code point assignment, and the split of hexades into printing and non-printing codes.  |