Scale Changer Harmonium allows you to slide the keyboard up to four half steps left or right. Scale Changer Harmonium is used to playing in B flat, and the song is in C, you just need to shift the keyboard up two half steps. It is a feature that is almost exclusively used on Kolkata harmoniums. This function allows a player to slide their keyboard into different positions and allow for easy transposing without changing your chord position.
Scale changer harmonium.
Paul 133 - Portable 13 scale changer with coupler.
3 sets of reeds.
Solid teakwood cabinet ( seasoned over 5 years).
Suitcase type folding, 7 fold bellow. 4 octave, 49 reeds.
Playing keyboard 3 octave, 37 notes