Medal ruling is a little known art by which pictures are mechanically produced from coins, medals, cameos, and other objects presented in relief. It made a sudden and spectacular appearance very early in the 19th century, but with the advent of daguerreotype photography near the middle of that century, it disappeared almost as suddenly. Joseph Saxton, an extraordinary mechanician was caught up in those arts, and made exceptional contributions to both of them. His medal ruling machines were the first of their kind to have eliminated distortions from the resulting pictures. Among the scientific uses to which his final model was applied was a diffraction grating made for John William Draper, who took the first photograph ever executed of the diffraction spectrum. The only remaining model of the three machines Saxton is known to have built is now at the Nation Museum of History and Technology, Smithsonian Institution. A combination of Saxton's medal ruling and daguerreotype skills helped to produce a remarkable illustration of the second United States Mint, which was published in 1842.