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In the US, size names are often denoted with a code of the format nR, where the number n represents the length of the shorter edge in inches. In the normal series, the long edge is the length of the short edge plus 2 inches (10 in or less) or 3 inches (11 in and above).
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Early in the 20th century, the ratio was used to specify the world format starting with 1 cm as the short edge of the smallest size. Walter Porstmann started with the largest sizes instead, assigning one an area of 1 m 2 (A0) and the other a short edge of 1 m (B0). He thereby turned the forgotten French sizes (relatively few in number) into a ...
4x6 (four-by-six) may refer as: A common photo print size A common term for vehicles with " 4 wheel drive ", but have 6 wheels total, like for instance the semi tractors used to tow their trailers.
3.716-inch spool: same picture size as 118 with longer spool 125 roll film 1905 1949 3 + 1 ⁄ 4 × 5 + 1 ⁄ 2 in 82.55 × 139.7 mm like 122 on longer spool; also for stereo pairs, 3 + 1 ⁄ 4 in × 2 + 1 ⁄ 2 in × 2 126 (early roll film) roll film 1906 1949 4 + 1 ⁄ 4 × 6 + 1 ⁄ 2 in 107.95 × 165.1 mm
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For example, a 15-inch (38 cm) display whose dimensions work out to 12 inches (30.48 cm) wide by 9 inches (22.86 cm) high, capable of a maximum 1024×768 (or XGA) pixel resolution, can display around 85 PPI, or 33.46 PPCM, in both the horizontal and vertical directions. This figure is determined by dividing the width (or height) of the display ...
The pica is a typographic unit of measure corresponding to approximately 1 ⁄ 6 of an inch, or from 1 ⁄ 68 to 1 ⁄ 73 of a foot.One pica is further divided into 12 points.. In printing, three pica measures are used: