Special support for copy work from books with open sizes up to 23.6 x 17.7 in. and a thickness of 5.9 in. Lockable pressure plate made of 6 mm thick float glass, with anti-reflection coating on both sides. Easy to unlock by means of release rails on both sides. Glass plate locates in opening position. Two foam-padded platforms - each 11.8 x 17.7 in. with adjustable space for spines of different sizes. One-time height adjustment for optimal pressure by means of spindle drive with hand crank. Subsequently automatic pressure control after each turning of a page. Mechanism for quick pressure release and subsequent resetting with previous pressure. Fold-out support bracket to hold large-sized books up to 35.4 x 23.6 in. (open size) while individual pages are positioned underneath the pressure plate.