1954 proposal to rid figures of curves

"A new set of numbers was designed which breaks away from the tradition of using a uniform stroke width for number forms, and instead makes as much use as possible of more easily discriminated form components [triangles and rectangles]. With little practice the numbers proved to be better than an accepted standard set, when presented singly under difficult viewing conditions." --H. Lansdell, "Effect of form on the legibility of numbers," Canadian Journal of Psychology, June 1954. 


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