Uniform Federal Accessibility Standards (UFAS)

4.30.4* RAISED CHARACTERS OR SYMBOLS.

Letters and numbers on signs shall be raised 1/32 in (0.8 mm) minimum and shall be sans serif characters. Raised characters or symbols shall be at least 5/8 in (16 mm) high, but no higher than 2 in (50 mm). Symbols or pictographs on signs shall be raised 1/32 in (0.8 mm) minimum.