Differential scale - Dynamic NPU Manual

Differential scale

Synonym Interval scale, linear differential scale
Definition A scale that contains numbers after subtraction between two values of the same kind.

Numbers on a differential scale can be subjected to subtraction and addition, but not division or multiplication.

An absolute zero point does not exist.

Description Numbers between negative infinity and positive infinity (-∞ – ∞)
Value set E.g. -10, -410.5, 754, 0, 14.9 
Comparison a+b, a-b
  1. Stevens SS. On the Theory of Scales of Measurement. Science. 1946;103(2684):677-680. doi:10.1126/science.103.2684.677
  2. Ferard G, Dybkaer R, Fuentes-Arderiu X. Compendium of Terminology and Nomenclature of Properties in Clinical Laboratory Sciences : Recommendations 2016. 1 ed: Royal Society of Chemistry; 2016. 182 p.

Kinds-of-property with differential scale as attribute

Celsius temperature
Length increment