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Sizes of Photographic Glasses.—2½ in. × 2 in., ninth plate; 3¼ × 2¾, sixth ; 4¼ × 3¼, quarter, carte de visite; 5 × 4, third; 6½ × 4¾, half; 8½ × 6½, whole. All plates above whole size are denoted by dimensions only, 6¾ in. × 3¼ in stereoscopic plate.
Ernest Spon.
Workshop Receipts, for the Use of Manufacturers, Mechanics and Scientific Amateurs.
London: E. and F. N. Spon, [no date, but 1873]
Page 250.
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Last revised: 12 November 2013.