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(5.8 ft) greater <br />less than 4.6 m (15 <br />Greater than 1.8 m (5.8 ft) ft) <br />to less than or equal to <br />3.0 m (10 ft) <br />greater than <br />3.0 m (10 ft) <br />4.6 m (15 ft) and <br />greater <br />less than 6.4 m (21 <br />ft) <br />6.4 m (21 ft) and <br />greater <br />in) per 0.3 m (one ft) of viewing <br />distance above 1.8 m (6 ft) <br />51 mm (2 in) <br />51 mm (2 in), plus 3.2 mm (0.125 in) <br />per 0.3 m (12 in) of viewing distance <br />above 4.6 m (15 ft) <br />75 mm (3 in) <br />75 mm (3 in), plus 3.2 mm (0.125 in) <br />per 0.3 m (12 in) of viewing distance <br />above 6.4 m (21 ft) <br />R409.5.6 Height from Finish Floor or Ground. Visual characters shall be 1.0 <br />m (3.25 ft) minimum above the finish floor or ground. Visual characters <br />indicating elevator car controls shall not be required to comply with R409.5.6. <br />R409.5.7 Stroke Thickness. Stroke thickness of the uppercase letter "I" shall be <br />10 percent minimum and 30 percent maximum of the height of the character. <br />R409.5.8 Character Spacing. Character spacing shall be measured between the <br />two closest points of adjacent characters, excluding word spaces. Spacing <br />between individual characters shall be 10 percent minimum and 35 percent <br />maximum of character height. <br />R409.5.9 Line Spacing. Spacing between the baselines of separate lines of <br />characters within a message shall be 135 percent minimum and 170 percent <br />maximum of the character height. <br />R409.5.10 The International Symbol of Accessibility. The International <br />Symbols of Accessibility shall comply with Figure 409.5.10. <br />Figure R409.5.10 <br />International Symbol of Accessibility <br />57 <br />