Tuning Forks 

Model No. 920
Tuning Fork

nickel-plated, Diameter: 3,6 mm,
a1 440 Hz, c2 523,3 Hz

Model No. 920 E
Plastic case

(for Tuning Forks)

Model No. 921
Tuning Fork

nickel-plated, Diameter: 4,5 mm,
c-a2 128-880 Hz

Model No. 921 E
Plastic case

for Tuning Forks 921 and 922

Model No. 922
Tuning Fork

nickel-plated, 4 x 5 mm,
a1 440 Hz, c2 523,3 Hz

Model No. 924
Tuning Fork

nickel-plated, 4 x 8 mm,
96 - 1050 Hz

Model No. 924 E
Plastic case

(for Tuning Forks)

Model No. 924440 08
Tuning Fork Set/diatonic

nickel-plated, c1-c2, a1=440 Hz

Model No. 924440 13
Tuning Fork Set/chromatic

nickel-plated, c1-c2, a1=440 Hz

Model No. 924440 28
Tuning Fork Set/diatonic

nickel-plated, c1-c2, a1=440 Hz, in Deluxe case

Model No. 924440 33
Tuning Fork Set/chromatic

nickel-plated, c1-c2, a1=440 Hz, in Deluxe case

Model No. 924440 RA
Tuning Fork with Resonance Case

Tuning Fork with Resonance Case and Striker

Model No. 935
Tuning Fork

nickel-plated, 7 x 13 mm,
a1 440 Hz

Model No. 935440 RA
Tuning Fork with Resonance Case

Tuning Fork with Resonance Case and Striker

Model No. 939
Striker

for Tuning Forks with Resonance Case