Orthographic Drawings is a way to draw 3D objects in there basic form. It is important to learn how to draw orthographically as this is the form of drawing that is most commonly used in the manufacture of products as you draw the product to scale with accurate dimensions.
What is the main difference between 1st and 3rd Angle Projection?
Orthographic drawings are also known as Working Drawings, these are used by designers to pass on any necessary details to the manufacturers in order for them to make them. Each drawing should include: accurate measurements, assembly instructions and specification for materials/colour and finishes