Paper is selected by its thickness, measured in grams per square metre (gsm). This is the weight of one square metre of the paper. Paper is available in many sizes, with A0 being the largest and ...
A micron, a metric unit, equals one-millionth of a meter. Gsm stands for "grams per square meter." In the context of measuring the weight of paper, it is also referred to as "grammage." This ...