Force gauge
Test units of force measurements are most commonly newtons or pounds. The peak force is the most common result in force testing applications. It is used to determine if a part is good or not. Some examples of force measurement: door latch, quality of spring, wire testing, strength ... but more complicated tests can be performed like peeling, friction, texture.
Physical constant
On November 16, 2018, the International Bureau of Weights and Measures voted to redefine several base units in the International System of Units (SI) by fixing the SI value of several physical constants, including the Planck constant, "h", elementary charge, "e", Boltzmann constant, "k", Avogadro constant, "N", and the speed of light, "c". The new fixed values are based on the best measurements of the constants based on the earlier definitions, including the kilogram, to ensure minimal impact.