Gram per Square Meter (g/m2 or gsm)
Gram per Square Meter (g/m2 or gsm) :
A common metric unit of areal density, used for paper, fabric, and similar materials. One gram per square meter is equal to about 0.029 4935 ounce per square yard. The symbol gsm is commonly used for this unit, but g/m2 is the properSI symbol
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