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.
20 microns is 0.002cm
100 microns is 20 times thicker than 5 microns
1 mm = 1000 microns. 20/1000=.02mm
1 mm = 1000 microns so 0.02 mm = 0.02*1000 = 20 microns. Simple!
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.
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.
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
20 microns is 0.002cm
100 microns is 20 times thicker than 5 microns
1 mm = 1000 microns. 20/1000=.02mm
This is the thickness of the gold plating on the lighter. 20u would be 20 microns
"20 microns" is a size measurement that has very little indeed to do with evaluating a piece of jewelry. More applicable would be someting like karat markings or carat weight.
To convert 20 microns to millimeters, divide by 1000: 20 microns = 20/1000 = 0.02 mm Then, divide 0.02 mm by 20 mm: 0.02 mm / 20 mm = 0.001
.020
0,02
0.02um