AL178- Sono Meter Brass Fitting :-

• Resonance box ( 1140  x 100 x 85 mm)
  
• 1mtr. long scale
  
• One brass & steel wire
  
• Two movable bridges
  
• Pulley and fixed screw.

AL178-A  Sono Meter Aluminium  Fitting: 

• Resonance box ( 1140  x 100 x 85 mm)
  
• 1mtr. long scale
• One brass & steel wire
  
• Two movable bridges
  
• Pulley and fixed screw.