The term 'Machine for Cutting Paper Down to Size' can be summarized as a GUILLOTINE, which is a 10-letter word. A GUILLOTINE is a device used for cutting paper into a desired size or shape. It was originally developed in France during the 18th century and was used as a method of execution. The GUILLOTINE consists of a blade that is dropped between two upright posts, slicing through the paper when it is placed in the frame.