Fabrikoid Case-Bound Books, the tough guys on the block. If you need a seriously impressive book, these books won’t let you down. Everything from the cover, paper, sewn-in pages, and the glue is designed to survive mother nature’s wrath. This Book comes equipped with 20 geological reference pages including conversion charts, standard and metric rulers, and numbered pages. Book meets U.S. E.P.A. guidelines and is legally defensible in case of litigation. A polydura photo scale is also included in the inside back cover sleeve.