It might come as a surprise, but the metal detector was actually invented by Alexander Graham Bell.
For those of you thinking his name rings a, ahem, bell (sorry, we can’t help ourselves), that’s because he’s responsible for a wealth of inventions, including the telephone.
Inspired by Parisian inventor Gustave Trouvé, Alexander Graham Bell developed a device with the aim of locating a bullet lodged in the chest of American President James Garfield back in 1881.
While the metal detector did work, it failed to dislodge the bullet, alas, getting confused by the metal coil spring bed that Garfield was lying on.
We’ll go ahead and call Bell’s metal detector an ‘MVP’, for it was Gerhard Fischer who created something more aligned with the best metal detectors we know and love today.
In 1925, he invented a portable metal detector, with the first devises going on sale in 1931.