| 摘要 |
A quarter calendar contains a postcard, first, second and third supports, on which the first, the second and third paper calendar blocks of twelve sheets with the image of the calendar of one month on each page are respectively located. The second calendar block contains the pages with the image of all sequential months, from January to December of the current year, for which the calendar is intended, the third calendar block - from February of the current year to January of the next year, and the first calendar block - from December of the past year to November of the current year. The postcard and three supports form a closed sequence by their connection by means of the springs. The spring connecting the postcard with the first support, and the spring connecting the second support with the third one, are located coaxially and will form the first axis, and the spring connecting the postcard with the third support, and the spring connecting the first support with the second one, are also located coaxially and will form the second axis being intersected with the first axis at a right angle.
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