There are several fixed lens cameras that have developed cult followings. That should be a clue that they're not an ...

It was a spectacular demonstration of the power of interchangeable parts. 50 Things That Made the Modern Economy highlights the inventions, ideas and innovations that helped create the economic world.

Three decades later, in 1863, the ratcheting wrench by J.J. Richardson came out, featuring a wrench that can be used together with removable and interchangeable sockets.