Technical drawing tools
- 1. This presentation has been made for you by FRANCISCO GUIJARRO BELDA From Isaac Albéniz Secondary School Leganés. Madrid. Spain.
- 2. PAPER You will use DIN A system. Every new sheet of paper is obtained splitting the former one into two equal parts using the middle points of the longest sides. Remember, DIN A is only the name of the system. The number stands for the paper size. DIN A4 is the most used everywhere. Its size is 210x297 mm.
- 3. COMPASS You will use it mainly to draw arches and circles. But it can be used also as a tool for measuring. Always keep the led of the compass sharpened . In order to do so, you can rub it against a sandpaper. There are special sharpeners as well.
- 4. COMPASS This is an extension of the tool. You can attach a marker to it and put the whole set instead of the led of the compass so that you can ink arches.
- 5. RULER This is the tool you will use to measure. You will also draw with it when you take your markers in order to get the final art. Remember, there is a kind of slant underneath the ruler. Just on the side of the numbers. When you are using the markers with the ruler, be careful to lean the marker on this part of the ruler. The ink will go under the gap and you will prevent it from spoiling your drawing.
- 6. Set Square They are very important because we will be using them often, especially to make perpendicular and parallel lines. I recommend you to buy them without numbers. It is more convenient and useful.
- 7. Where do these rulers come from? Remember, if we split a square If we split an equilateral triangle in two by a diagonal, we will get the equal parts, we will get the bigger of smaller of the two rulers in the the two rulers in the set square set square. 45º 90º 30º 45º 60º That is why the biggest angle of both 90º triangles is 90. What might be the value of the other two angles?
- 8. Other tools Mechanical pencil Sharpener Rubber