Figure space

A figure space or numeric space^[1] is a typographic unit equal to the size of a single numerical digit. Its size can fluctuate somewhat depending on which font is being used. This is the preferred space to use in numbers. It has the same width as a digit and keeps the number together for the purpose of line breaking.^[2]

^ IBM (1996). "Symbols - Personal Computer". REGISTRY, Graphic Character Sets and Code Pages. GCSGID 01310.
^ Heninger, Andy, ed. (2013-01-25). "Unicode Line Breaking Algorithm" (PDF). Technical Reports. Annex #14 (Proposed Update Unicode Standard): 19. Retrieved 10 March 2015. WORD JOINER should be used if the intent is to merely prevent a line break

[1] IBM (1996). "Symbols - Personal Computer". REGISTRY, Graphic Character Sets and Code Pages. GCSGID 01310.

[annex14-2] Heninger, Andy, ed. (2013-01-25). "Unicode Line Breaking Algorithm" (PDF). Technical Reports. Annex #14 (Proposed Update Unicode Standard): 19. Retrieved 10 March 2015. WORD JOINER should be used if the intent is to merely prevent a line break

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