| 摘要 |
<p>The book holder (book tensioner) is made from two plastic plates (14, 16) lying above each other and adjustable in relations to each other which can be fitted to the height of the books varying between 18 and 31 cm. and fixed at that height level by fitting the holding teeth into the appropriate holding recesses (33). Holding combs (30) for the book to be held can be moved sideways corresponding to the width of the opened book in any two guide slots (32) of the two plastic plates. The holding combs are held in the guide slots by sprung inserting locks through a small locking plate.</p> |
