Incunabula - Dawn of Western Printing

Whole Paper (landscape, aspect ratio is 1:1.4142)
Whole paper

folio (folded once : portrait, aspect ratio is 1:0.7071)
Folio

quarto (folded twice : landscape, aspect ratio is 0.7071:0.5)
Quarto

octavo (folded three times : landscape, aspect ratio is 0.5:0.3536)
Octavo

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