US Patent 7251141 Rack and block for housing dosimeters

A rack for housing dosimeters includes a plurality of blocks having a rectangular shape. Each block is provided with a housing space for housing the dosimeter and an entrance opened in a front surface of the block for inserting the dosimeter therethrough. Each block also has at least one of a projection and a concavity formed on at least one of top, bottom, left, and right surfaces to be fitted to each other. Accordingly, it is possible to assemble the plurality of the blocks in at least one of vertical and horizontal directions by fitting the projection and the concavity on the blocks.