The doublette rank have 56 plain metal pipes, pourvus d'une with a tuning slot in the back side.
All pipe have a roman mouth.

 

Diameters of the windchest holes

Note
Hole (mm)
 Note
Hole (mm)
 Note
Hole (mm)
do 1
10
 do 3
7
 do 5
6
do# 1
10
 do# 3
7
 do# 5
6
ré 1
10
 ré 3
7
 ré 5
6
ré# 1
10
 ré# 3
7
 ré# 5
6
mi 1
10
 mi 3
7
 mi 5
6
fa 1
10
 fa 3
7
 fa 5
6
fa# 1
9
 fa# 3
7
 fa# 5
6
sol 1
9
 sol 3
7
 sol 5
6
sol# 1
9
 sol# 3
7
la 1
9
 la 3
7
la# 1
9
 la# 3
7
si 1
9
 si 3
7
do 2
8
 do 4
7
do# 2
8
 do# 4
7
ré 2
8
 ré 4
7
ré# 2
8
 ré# 4
7
mi 2
8
 mi 4
7
fa 2
8
 fa 4
7
fa# 2
7
 fa# 4
7
sol 2
7
 sol 4
7
sol# 2
7
 sol# 4
7
la 2
7
 la 4
7
la# 2
7
 la# 4
7
si 2
7
 si 4
7

 

Roman mouth

 

All the pipes are on the windchest (here in the foreground)

 

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