The OEM Rediform National Lab Computation Notebook RED43648 is designed for efficient lab use with numbered pages from 1 to 152. It features eye-ease green paper and durable brown Pressboard covers. Each page includes a headline, left margin line, right margin line, and 4 x 4 quad-ruling (4 squares per inch), making it ideal for precise computations. The notebook contains 75 sheets, providing ample space for your notes and calculations.