graph paper 
noun [mass noun]
Paper printed with a network of small squares to assist the drawing of graphs or other diagrams.They printed graph paper, orders from the Students' Association and labels for pharmacies' bottles....
- You gather the materials you will need - book, paper, pencil, graph paper, etc. - then listen to the teaching part of the lesson.
- Use graph paper, making each square equal a given dimension to get all the components to scale.