Pitch Indications - Rodgers Topper Owner's Manual

PITCH INDICATIONS
All even numbers denote a unison pitch (octaves, superoctaves,
suboctaves) .
8' denotes the same pitch as a Piano, i.e., Middle "C"
on the Piano is the same as Middle
"c"
on the organ.
16' denotes the octave below; Middle
"c"
on the organ
would sound an octave lower than Middle "C".
4'
denotes an octave above; Middle
"c"
on the organ
would sound an octave above Middle "C".
2' denotes two octaves above Middle "C".
All fractional numbers denote non-unison pitches.
5~1/3'
denotes a fifth (5 white notes)
above Middle "C".
2-2/3' denotes a twelfth (12 white notes)
above Middle "C".
1-3/5' denotes a seventeenth .(17 white notes)
above Middle "C".
1-1/3' denotes a nineteenth (19 white
notes)~
above Middle "C".
These non-unison pitches called "Mutations" should be used
very sparingly.
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