Generally defined, the sensibility reciprocal is the change in
                           load required to change the position of rest of the indicating element or
                           elements of a non-automatic indicating scale a definite amount at any load. For
                           a more complete definition, see Specifications, Tolerances, and Regulations
                              for Commercial Weighing and Measuring Devices, Handbook H44, National
                           Institute of Standards and Technology, Washington, D.C., USA, September 1949,
                           pp. 92 and 93.