Tuning forks are also used by practitioners in fields such as physiotherapy, sound healing, and alternative wellness, with a wide range of products available at different price points.

[Willem Koopman aka Secretbatcave] was looking at a master clock he has in his collection which was quite a noisy device, but wanted to use the matching solenoid slave clock mechanism he had to hand.

Every GP has one, classical musicians rely on them to maintain the perfect key in concert halls and some believe they can transmit healing powers to cure all manner of ailments. Invented in the 1700s, ...