This tool R&R is a convenient tool that can be used anywhere, not just on the ISS. It is a ruler combined with a razor blade, so you can measure, using the ruler, how much you are cutting, using the blade. This is made to improve the precision of astronauts, since they know exactly where they are cutting, and how long they have to cut it. The R&R is also very convenient because you can hold it in one hand, so you can hold something else in the other hand. Even though it is a ruler as well, our prototype has been scaled down to fit contest guidelines.