In 1862, Union soldier Samuel Decker was reloading his gun when it misfired and blew off half of both his arms. Three years later, he had designed and overseen the making of these prosthetic limbs.
With his these mechanical arms he was able to feed and clothe himself as well as picking up objects as small as a pin. Most impressively he regained the ability to write.
In 1867, the Army Medical Museum invited him to sit for photos so that he and his invention could be documented.