A choice of letters (A-Z) or numbers (0-9). The number of characters per card is determined by the size of the character. Each card contains various quantities of the same character (shown below). 19 x 14mm contains 36 characters with a character height of 16mm. 38 x 21mm contains 12 characters with a character height of 26mm. 56 x 21mm contains 12 characters with a character height of 50mm. 90 x 38mm contains 6 characters with a character height of 75mm. 130 x 45mm contains 5 characters with a
