Tuning Fork Octave, 8Pk C (256Hz) - C (512Hz), Steel Tuning Forks For Physics Experiments, May Be +/- 5% Of Stated Frequency, Includes: (8) Tuning Forks, Nickel-Plated, Plain Shanks, With Frequency Marked, C (256), D (288), E (320), F (341), G (384), A (426), B (480), C (512)
Pair Of Tuning Fork - Steel, Includes: (2) Tuning Forks With Bases, One Is Adjustable (1) Mallet, For Demonstrating The Production Of Beat Frequencies. Comprises Two Nickel Plated Forks A (440 Hz) Mounted On Individual Boxes