This Engineering Computation Pad is designed for technical drawings, drafting, and calculations. It features margin-ruled front pages for structured note-taking and cross-section ruled backs with 5 squares per inch for precise graphing and calculations. The rigid chipboard backing provides a sturdy writing surface, making it ideal for engineers, students, and professionals. The 8.5" x 11" pad includes 100 sheets, making it a reliable tool for engineering and mathematical work.