At least 3/4 x 4 for the number 1 makes clear sense. Problem with using a number one in the example is that a 3/4" x 4" 1 has both a 3/4 overall width and a 3/4 (for lack of a better word) thickness.
I think the rule was written as "3/4 x 4" because of the number 1 being thin. I am questioning how this rule affects other numbers, namely the wider ones. The number 2 for instance will be around 2.5" wide when 4" tall. This satisfies the rule about being larger than 3/4", but it still may not satisfy the rule if the characters "thickness" is less than 3/4".
Which way is the rule intended to be interpreted?
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