NEW IDEA FOR STREET LETTERING.—An optical illusion slop sign designed by Frank M'Laughlan, industrial designer, of Chicago. The letters give a three dimensional view, yet are painted flat on the street. The letters are designed from a mathematical formula that applies for every letter of the alphabet. Because of the sign’s ability to stand up from the street as the autoist approaches, the sign is visible for 150 ft more than the conventional slop sign.
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Bibliographic details
Evening Star, Issue 23350, 21 August 1939, Page 15
Word Count
75NEW IDEA FOR STREET LETTERING.—An optical illusion slop sign designed by Frank M'Laughlan, industrial designer, of Chicago. The letters give a three dimensional view, yet are painted flat on the street. The letters are designed from a mathematical formula that applies for every letter of the alphabet. Because of the sign’s ability to stand up from the street as the autoist approaches, the sign is visible for 150ft more than the conventional slop sign. Evening Star, Issue 23350, 21 August 1939, Page 15
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