- Ratio scales and interval scales are both cardinal scales, in contrast to any scale that indicates no more than the order of entities. Distance and temperature both have several commonly met cardinal scales, for example, kilometres (ratio scale) in the case of distance and Celsius (interval) in the case of temperature. Cardinality is sometimes vulgarly confused, especially when associated with utility, with interpersonal comparability, with which, however, it has nothing intrinsic to do at all. Interpersonal comparisons may be made ordinally or cardinally. ' Health ' is commonly measured cardinally or ordinally, according to the instrument used.