Characterized in that consists of two parts; A, and B, (Fig-1-2-3). Part A, made of any kind of material (preferably clear plastic), has a narrow flat rectangle (2-Fig-2, 5-fig-3) having a width of 5 mm, as this is the separation lines alternative in most of the issues, and facilitate reading. Said box has a base which is crossed by one of the Pernadas Part B (3-fig-3, 6-fig-2, 7-fig-1), around which can rotate (angle (Fig-5 ) to adapt to the first or last pages of the book in question.
展开▼
