Combination mechanism

A combination device comprising:

• a case to hold the device;
• a single source of light mounted on the case;
• an optical receptor mounted on the case in line with, but separate from, the single source of light;
• any number of separated circular, overlapping barriers mounted between the optical receptor and single source of light;
• A hole drilled in each barrier of equal size in every barrier in sequence so that light may pass through them from the source of light to the optical receptor;
• a number of separators, equal to the number of barriers, which are hollowed out circles of metal that can be placed on top of the barriers and mounted on to the case;
• a turn dial mounted off from the inner most overlapped barrier extending through and filling up a hole in the case;
• an open space on each barrier that can be aligned with each other barrier's open space;
• catch bars, which are tiny pieces of metal that can be attached on to and extend off from the barriers;
• a single catch bar mounted anywhere along the bottom side of each barrier of a length so that each catch bar can reach only the next catch bar in succession;
• a predetermined mechanical combination code formed from the relationship made between the different catch bars and their placement along each barrier, and;
• infinite predetermined mechanical combination codes that can be formed by the changing of position of the catch bars in relation to each barrier's open space and the collective barriers together in succession.