This Book Damage Atlas is a tool which enables to recognize damage and determine its extent. The Atlas presents the descriptions of types and categories of damage with illustrative photos. The damage to books is assessed visually. The instructions for carrying out paper pH and double fold tests are also included. The book condition calculator enables to summarize different types of damage easily and receive a general assessment of object condition. The Book Damage Atlas is meant to be used by all establishments and specialists in the field of preservation and also all interested amateurs. No previous knowledge or special skills are required to use this Atlas.