A decade of the E12 values shown with their electronic color codes on resistors.

The E12 series of preferred values.

Relative area of each circle represents the value, but I'm not sure the sizes are really all correct.

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  Spiral of E12 values 1 to 1000. Relative area of each circle represents the value.
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  E12 series and resistor colours (horizontal)
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  E12 series and resistor colours (vertical)
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  E12, highlighting addition to illustrate it
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  E12 resistor colour codes

Photo credit: Peter Halasz. (User:Pengo)

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