Materials To make traces on paper:

The following materials are suggested, clean and in good condition:

- Arist: square with a protractor and integrated reference lines, which allows marking angle and draw parallel and perpendicular lines;

- Compass: it should not have a looseness and its tips must be at the same level, with the mine sharp;

- Pencil or mechanical pencil: medium-hard and very sharp (unnecessary in the case of fine mines);

- Rubber: preferably white and soft;

- Paper: low texture, A4 format and about 80g for common exercises, A3 format and about 120g for larger tests and exercises.