This Technik art A4 graph pad is ideal for use in mathematics, the sciences and for producing charts, graphs and visual presentations. Also due to the scales used this would be good for doing to scale plans of properties, shop floors, work areas etc. They are 40 leaves of printed blue graph paper with a 1, 5 and 10 mm grid with a surrounding border. All bound into a top bound notepad and sheets are easily removed.. A4. 40 leaves. 1, 5 and 10mm grid. Printed blue. Border