Book support frame, to hold an open book at an angle of 25o, has two page retainers on a horizontal rod with swing pointed end plates to lie against the open pages and allow frequent page turning

摘要

The book support frame, at an angle of 25[deg], has two additional holders to keep down the opened pages. The book rest (4) is flanked by trapezoid sides (1) joined together by a rod (2). The rod supports two page retainers (3) with swing pointed plates (6), held in place with adjustment by a knurled screw (7,8).