HANDLING LIBRARY MATERIAL
Book structures
Bindings are far more vulnerable and fragile than is presumed and need to be handled with great care. Board attachments are often precarious, with extremely
thin leather over the joints. Such books should always be supported when in use and boards should never be flipped back 180° from the text-block.
 boards should never be flipped back 180° from the text-block
Books are complex composite objects which open in a variety of ways and require different methods of support when opened. Very few books can be opened at
180° without being damaged. It is strongly recommended that no book is opened more than 120°, and tightly bound volumes no more than 90°.
 very few books can be opened at 180° without being damaged
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