Belonging to the Professional Series of Pakrashi And Co, the Scale Changer Harmonium with Seven fold bellow is a portable harmonium. All the products of Pakrashi And Co. Are manufactured maintaining the international pitch of A-440 Hz to comply with the global standards. This musical instrument is available in two and half playing octaves. The scale can be changed whenever required. The Scale display label helps to change the scale without looking down at the changing knob and the coupling system provides the facility of playing a particular note.