Wittner Tuning Fork

• Model No. 921
  Tuning Forknickel-plated, also gilded available,Diameter 4,5 mm/0,18″Upon request each frequency between128 Hz and 880 Hz

Tuning Fork

• Model No. 922
  Tuning Fork
  nickel-plated,
  4 x 5 mm/0,16″ x 0,20″,
  a1 440 Hz, c2 523,3 Hz