The Firmo A3 90gsm graph paper notebook with 50 sheets is the indispensable technical drawing tool for engineering and architecture students. Composed of 50 sheets of 90 g/m² paper printed with a high-precision blue millimeter grid, it allows you to draw graphs, plans, and scale diagrams with total accuracy. The protective cover keeps the sheets aligned and free from creases. Perfect for geometry, physics, mathematics classes, and technical offices.