Aluminum Tuning Forks, Assorted 256 to 512 Hertz, Set of 8, Frey Scientific, Mfr#: 7020-30

Tuning forks offer a safe and 'sound' way to demonstrate energy and vibration of sound for physics and music classes. This set of 8 two-prong forks are made of aluminum metal and include the following frequencies: C 256, D 288, E 320, F 341.3, G 384, A 426.7, B 480, and C 512 Hertz (Hz). The top quality aluminum alloy tuning fork (with 7 x 9 millimeter tines) vibrates long and loudly. Fork is tuned within 0.05 percent of rated frequency and is stamped with scale letter and frequency. Set of 8 forks are each 6 to 10 inches long.