๐ŸŽฒ

๐ŸŽจ The arts ๐Ÿ–Œ๏ธ Drawing and color

Technical drawing

Technical drawing needs skill and attention to detail. The draftsman uses different instruments to produce a drawing that shows the exact shape and size of an object.
Technical drawing needs skill and attention to detail. The draftsman uses different instruments to produce a drawing that shows the exact shape and size of an object.

๐Ÿ“– In short

Technical drawing, or engineering drawing, is a very precise drawing that shows how to make a machine or build a building or bridge. It isn't drawn just to look nice, but so workers and engineers understand exactly the measurements and shapes.

๐Ÿคฉ Did you know?

  • Technical drawing is also called mechanical or engineering drawing.
  • Drawn plans of buildings are called โ€œplansโ€.
  • Some old technical drawings were printed in blue and are called โ€œblueprintsโ€.
  • Today some programs build a 3D model from a technical drawing.

๐Ÿ”Ž Find out more

๐ŸŒŸ Precise tools

A draftsman uses a ruler, set square, compass, protractor and a fine pencil to draw exact straight lines, angles and circles. Today most of them draw on the computer.

๐Ÿ” From every side

A draftsman draws the same object from several sides, from the front, the side and above, so we know its complete shape.

๐Ÿ’ก Scale

You can't draw a house life-size on a sheet of paper! So the draftsman draws it smaller by a fixed ratio, for example each centimeter in the drawing equals a meter in real life. This is called the scale.

๐ŸŽฏ A language everyone understands

Technical drawing has agreed rules and signs, so an engineer in any country can read a drawing from another country, like a universal language.

๐Ÿ“ธ More pictures

A drafting machine like the one shown above combines several tools: the protractor, the scale, the T-square and the set square. It helps the draftsman work quickly and well.
A drafting machine like the one shown above combines several tools: the protractor, the scale, the T-square and the set square. It helps the draftsman work quickly and well.
Mechanical drawing. Draftsmen prepare mechanical drawings to give technical information. Unlike a photograph or a perspective drawing, a technical drawing shows different views of an object to give its dimensions.
Mechanical drawing. Draftsmen prepare mechanical drawings to give technical information. Unlike a photograph or a perspective drawing, a technical drawing shows different views of an object to give its dimensions.

๐Ÿงฉ Test yourself

1 Why is a technical drawing made?

2 Which tool do we draw circles with?

3 Today some programs build a ?? D model from a technical drawing.

4 Which picture shows โ€œTechnical drawingโ€?

๐ŸŽจ Discover more