Single row of pipes, arranged in musical order and of the same type or tonal character. Sections of a single rank may be given individual names. For example, a single rank of violin pipes may be called violin, viola, and violoncello, violin pertaining to the treble part, viola to the middle range, and violoncello to the bass. In orchestrion and organ nomenclature a listing of such terms usually does not correspond to the actual number of ranks of pipes in the instrument. Note: do not confuse with register. A register is a device for controlling one or more ranks of pipes or even a portion of a single rank.
MBSI
Musical Box Society International