1.92 quantity calculus algebra of quantities Rules and operations of algebra applied to unitary quantities. Note 1: In quantity calculus symbols are consistently used to represent quantities as a product of a numerical quantity value and a measurement unit, rather than their numerical values expressed in certain units. Note 2: Algebraic relations between quantities, such as equations or functions, are independent of the choice of measurement units, and therefore preferred to expressions based on numerical values. Note 3: VIM 1.21 defines quantity calculus as “set of mathematical rules and operations applied to quantities other than ordinal quantities” Source: ref. 6 p. 3.
 1.92 quantity calculus algebra of quantities Rules and operations of algebra applied to unitary quantities. Note 1: In quantity calculus symbols are consistently used to represent quantities as a product of a numerical quantity value and a measurement unit, rather than their numerical values expressed in certain units. Note 2: Algebraic relations between quantities, such as equations or functions, are independent of the choice of measurement units, and therefore preferred to expressions based on numerical values. Note 3: VIM 1.21 defines quantity calculus as “set of mathematical rules and operations applied to quantities other than ordinal quantities” Source: ref. 6 p. 3.

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