A trip through the International Museum of Surgical Science in Chicago will make you glad you live in the modern world instead of the "good old days"! Wired has a gallery of exhibit photos ranging from a skull that belonged to a trepanation patient to early x-ray machines. Pictured is a vest used in 1899 to correct scoliosis. If this were posted as a "What Is It?" I would guess it to be an instrument of torture. Link -via Digg

(image credit: Jim Merithew/Wired.com)