The metric system is used to measure the length, mass or capacity of an object. Length is measured in millimetres (mm), centimetres (cm), metres (m) or kilometres (km). Mass or ...

1 kilogram is equal to 1000 grams or 1kg = 1000g When measuring mass, you use weighing scales. These can be digital or analogue. On analogue scales, measurements may be marked in grams ...

A nanometer (nm) is a unit of length in the metric system, defined as one billionth ... (SI), making the nanometer a derived unit used primarily to measure the atomic and molecular scale of materials ...