Paragraph 3
Width, Spacing and Thickness of Marks
For the purposes of this paragraph:
“standard letter” shall mean any letter other than the letters, I, M and W;
the width of each standard letter and the length of the hyphen between the nationality mark and the registration mark shall be two-thirds of the height of a letter;
the width of the letters M and W shall be neither less than two-thirds of their height nor more than their height; and
the width of the letter I shall be one-sixth of the height of the letter.
The thickness of the lines comprising each letter and hyphen shall be one-sixth of the height of the letters forming the marks.
Each letter and hyphen shall be separated from the letter or hyphen which it immediately precedes or follows, by a space equal to either one-quarter or one-half of the width of a standard letter. Each such space shall be equal to every other such space within the marks.