According to ASTM E-384, microhardness testing specifies an allowable range of loads for testing with a diamond indenter. The resulting indentation is then recorded and converted to a hardness value. Typically loads are very light, ranging from a few grams to one or several kilograms. Since the test indentation is very small, microhardness testing is useful for a variety of applications such as testing very thin materials like foils or measuring individual microstructures.