Thomas Engineering Notebooks feature the highest quality construction and are designed to protect your intellectual property. Notebooks feature a durable, hardbound, black imitation leather cover with special coating to protect lab work and prevent tampering. Notebooks include Guidelines for proper Laboratory Notebook documentation of your research, Table of Contents pages for recording page contents and dates and signature blocks for recording names, company, address, phone and email of owner. Special fields include: Title, Project, Book Number, "Continued from Book No." and "Continued to Book No." Laboratory Notebooks have a highly flexible round binding that allows the book to lay completely flat when open. Engineering Notebooks are similar to Laboratory versions but possess square binding with section-sewn pages, ensuring that pages will not detach in rugged lab and field environments. Each notebook is imprinted with 1/4” scientific grids and include guidelines for proper documentation of your notebook. Notebook pages measure 10" length by 8" width.