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.