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David Champion writes: > Is A6 the ISO rough equivalent of a 3x5 (inch) card? 3×5-inch cards have an area of 76.2 × 127 = 9677.4 mm˛. A6 has an area of 105 × 148 = 15540 mm˛; on the other hand, A7 has an area of 74 × 105 = 7770 mm˛. Neither of those matches very well in either dimensions or area. B7 is a much closer match; it's 88 × 125 = 11000 mm˛. http://en.wikipedia.org/wiki/ISO_216 has a pretty diagram of the ISO A sizes. -- Aaron CraneThere's stuff above here
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