Although we still use the same language and terminology, modern day books are no longer constrained by the same restrictions of the antiquarian book binder. In the past a Quarto once described a book that had larger sheets folded twice each creating four distinct quarters. Now we generally use these terms to describe the general size of a book.
|
64mo |
Sexagesimo-quarto |
2 x 3 inches |
|
48mo |
Quadragesimo-quarto |
2.5 x 4 inches |
|
32mo |
Tricesimo-Secondo |
3.5 x 5.5 inches |
|
18mo |
Octodecimo |
4 x 6.5 inches |
|
16mo |
Sextodecimo |
5 x 7.375 |
|
12mo |
Duodecimo |
5.5 x 7.5 inches |
|
8vo |
Octavo |
6 x 9 inches |
|
8vo |
Royal Octavo |
6.125 x 9.25 inches |
|
8vo |
Super Octavo |
7 x 11 inches |
|
8vo |
Imperial Octavo |
8.25 x 11.5 inches |
|
4to |
Quarto |
9.25 x 12 inches |
|
fo. |
Folio |
12 x 19 inches |
|
fo. |
Elephant Folio |
23 to 25 inches |
|
fo. |
Atlas Folio |
25 to 50 inches |
|
fo. |
Double Elephant Folio |
50+ inches
|
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