I bought a tuning fork in C. It has printed on it 261, but it isn't, it's an octave higher than that at 522 Hz.
So out of curiosity, I had a look at what's available.
You can have a set of 13 Wittners for £150+
You can have them in a case for £400
Or you can have the case on its own for £36
For £50 you can have a tuning fork in its own resonance box (as if you couldn't make one)
You can have A in 435/440/441/442/443/444/445
Not to mention all the medical tuning forks.
For Feng Shui there's this crystal tuner:
Or you can tune angels:
You can reduce stress with the Ohm/Earth fork:
You can have the solfeggio set which uses secret frequencies ("a set of forks in the sacred frequencies known as the Secret Solfeggio. Deciphered by Dr. Joseph Puleo using the ancient Pythagorean method of reducing the verse numbers to their single digit integers, the codes revealed a series 6 of electro-magnetic sound frequencies that correspond to the 6 missing tones of the ancient Solfeggio scale. These original sound frequencies were used in Ancient Gregorian Chants. The chants and their special tones were believed to impart tremendous spiritual blessings when sung in harmony during religious masses. These frequencies can now be produced with the Sacred Solfeggio Tuning Forks. 174 Hz, 285 Hz, 396 Hz, 417 Hz, 528 Hz, 639 Hz, 741 Hz, 852 Hz, 963") - so why are there 9 of them?:
There are various sets of these:
And you can even have quartz ones. C# clears your adrenals for a mere £126
Or there's D# if you want to do some shagging:
http://www.*** Commercial link removed ***/Sexual-Chakra-Q ... uning+fork
Fork me! I wonder if I can get a combination Snark/cock ring.
1975 Calatayud y Gisbert, Yamaha CG131S.