[Edit] 
plaque or 10 microns
It has so do with the amount of gold plating is on an item lets say a watch, you take it to the jewelers and by knowing how many microns the gold layer is he can effectively polish your watch or whatever it may be with out hitting the base metal there is a sight that explains it better and gives examples of micron thickness as compared to . You just have to search it out.
First answer by ID1181406114. Last edit by ID1181406114. Question popularity: 11 [recommend question]
Answers.com > Wiki Answers > Categories > Science > What does 'plaque OR g 10 microns' mean on a medal?
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What do you mean by plaque? What is plaque OR g 10 microns what is equasions on the metal.?
