On a watch case, plaque OR G 20 microns means that the case is solid gold. The 20 micron relates to the thickness of the gold plating.
I assume you mean what is a hundredth of a millimetre. There are 1000 microns in a millimetre. This means 1/100 of a mm, i.e. 0.01 mm is 10 microns.
What does 753 on a gold watch mean
The 7 in this case would be a modifier in this case this would mean .0000001
"k", in this case, may mean "kilo", that is, "times thousand".
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Plaque is Plated, 925 means 925 Silver and is G 20M is 20 microns or "thickness" of the plating. The same would apply for Gold plating
Marking on jewelry, watch cases, or pens. Plaque is plating, lamine is mechanically applied, such as American "Gold Filled" and 20 microns is thickness of precious metal, fondacier inox means base metal is stainless steel. For example, plaque OR G 20 fondacier inox would mean a 20 micron plating of gold (French word is OR) on stainless steel.
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.
I assume you mean, how many microns in 0.0015mm. Well there are 1000 microns in a millimetre. In order to convert mm to microns, you have to multiply by 1000. 0.0015mmx1000 is 1.5 microns.
What does plaque mean
I assume you mean .076, otherwise your question makes little sense as structured. There are 1000 microns in a millimetre. Therefore 0.076x1000 gives you 76 microns.
In French, the word "plaque" can be translated to mean a plate, a sign, or a patch of something.
You cannot directly compare length with volume so I assume you mean millimetre. 0.5 microns is 0.0005 millimetres
"une plaque d'immatriculation" is a registration number plate (for your car) in French.
I assume you mean what is a hundredth of a millimetre. There are 1000 microns in a millimetre. This means 1/100 of a mm, i.e. 0.01 mm is 10 microns.
If you mean 0.01 mm, this would be 10 microns
it means that the Watch case make about 80% of silver