This property allows an instance of E54 Dimension to be approximated by an instance of E60 Number primitive.
Examples:
The height of silver cup 232 (E54) has value 226 (E60). (fictitious)
Christie’s hammer price for Vincent van Gogh’s “Still Life: Vase with Fifteen Sunflowers” in London on 30th March 1987 (E97) has value 24,750,000 (E60).