File talk:CadmiumMetalUSGOV.jpg

coin comparison
Uses a coin for scale. There is a template somewhere that should be added to pictures with coins used to scale but I can't find it so if somebody could add it i'd appreciate that. 82.69.80.47 (talk) 18:23, 28 May 2008 (UTC)
 * Since a coin in this case is also used for color comparisons between metals, the alternative of using an unspecified material ruler is not a pretty clever idea IMHO. ... said: Rursus ( m bork³ ) 10:22, 1 January 2010 (UTC)