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Four Tuning Forks On Resonance Box P-7250 |
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| Four tuning forks are mounted on a single proper sized resonance box to produce a major chord. Forks have frequencies of C1 256, E 320 Hz, G 384 Hz and C2 512 Hz. When struck together with hammer, the forks will produce the chord of C major. Supplied complete with one hammer. |
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