The Little Scope Kit helps you make a miniature Marblescope with a big image. Outside, the Little Scope measures only 5/8" in diameter and less than 3" long. Inside, an optical lens and aluminized front surface mirror create an image
which rivals much larger scopes. The Little Scope can be clipped to a pocket, hung on a keychain, used as a necklace pendant, etc. The kit contains a brass tube, pre-cut front surface mirror, an optical lens, four marbles, wire, jump rings and
complete instructions. The refill comes complete with everything except the instructions.