National Brand 43-648 Computation Notebook, 4 x 4 Quad, 11-3/4 x 9-1/4"

Streamline lab research, engineering calculations, and technical note-taking with the National 43-648 Computation Notebook. Engineered specifically for scientists, engineers, students, and trade professionals, this heavy-duty lab notebook features 75 double-sided sheets (150 sequentially numbered pages) printed with crisp 4x4 quad ruling (4 squares per inch). Inside, glare-reducing Eye-Ease® green paper minimizes visual fatigue during long analysis sessions. Each page includes a designated headline section along with left and right margin lines for precise auditing, indexing, and lab record management. Bound in a durable, eco-friendly brown pressboard cover with a strong perfect-bound spine, this 100% recycled computation book keeps your vital project data permanently secured and archival-ready. National Brand 43-648 Lab Computation Notebook features numbered pages from 1 to 156, eye-ease green paper and brown Pressboard covers. Each page has a headline, left margin line, right margin line and 4 x 4 quad-ruling (4 squares per inch). Notebook contains 75 sheets. Size 11-3/4 x 9-1/4".