FOLIO
1 sheet + 1 fold = 2 leaves (folia)
Based on a printer sheet of 20" x 25"
books with FOLIO signatures
would measure about 12½" x 20"
QUARTO
2 folds = 4 leaves
Based on a printer sheet of 20" x 25"
books with QUARTO signatures
would measure about 10" x 12½"
OCTAVO
3 folds = 8 leaves
20" x 25" sheets made
OCTAVO signatures
of about 6¼" x 10"
DUODECIMO
4 folds = 12 leaves
20" x 25" sheets would
make a DUODECIMO
signature of 6¼" x 6b"
SEXTODECIMO
4 folds =
16 leaves
20" x 25" sheets =
SEXTODECIMO
signatures
of 5" x 6¼"
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
25
8
9
24
32
1
16
17
29
4
13
20
28
5
12
21
23
10
7
26
18
15
2
31
19
14
3
30
22
11
6
27