Comparison of font size for different fonts

This came up in a different thread: Carbide create -extra characters to get 15 - (strange)

For an example of the difficulties in font handling / sizing, here are two characters from different fonts, set to the same ostensible point size in InDesign — notice that both are selected, and read as being “120 pts.”:

image

This is caused by the outlines for the fonts being placed differently on the “em square” used to design the fonts.

See:

http://designwithfontforge.com/en-US/The_EM_Square.html

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