When we take unknown resistor we usually take a multimeter to get numerical value. Many not even bother to decode color bands using tables – it takes time and in some cases it may be hard to detect colors right. Anyway each one of you have your own methods of detecting part values. If you like playing with color codes then check out this dun ohmmeter which displays a color code instead of numerical value. If not practical, it may be a great addition to your workbench.
The ohmmeter uses Atmega168 to perform measurement. The method lies behind measuring capacitor discharge time. Once value is determined, RGB LEDs are lit behind acrylic bands. Luckily there is a small 7 segment display module on one band which displays so wanted numerical value. So in the end this can be useful tool.