rangeability
/ˌreɪn(d)ʒəˈbɪlɪti/(also rangability) Engineering
noun
The ratio of the maximum to the minimum values of a parameter at which a system or device will operate; specifically the ratio of the greatest and least values that an instrument can measure.
Origin
1950s; earliest use found in Ernest Beachcroft Jones (b. 1914). From range + -ability.