Used to place very tiny components onto circuit boards. I needed to do a small production run of some circuit boards that used SMD components. These are really small, so using tweezers to place them became somewhat tedious. After doing some research, I learned about manual pick and place machines, and decided to build one. You can find more information here: http://trains.socha.com/2014/07/building-fsr-circuit-boards.htmlYou'll find a complete parts list, and instructions, on my blog: http://trains.socha.com/2014/07/building-manual-pick-and-place-machine.html