PICTORIAL DRAWINGS

• Pictorial drawings


  An image of an object (actual or imagined) viewed as it would be seen in a chosen direction or from a selected point of view
• Pictorial drawings are sketched freehand or made with drawing instrument
• Isometric drawing


  A pictorial representation of an object in which all three dimensions are drawn at full scale
• Isometric

  Equal measurement
• Oblique drawing


  A type of parallel projection, where the object is shown from a 45° angle to the horizontal plane
• Types of Oblique Projections

  • Cavalier (foreshortening factors for all three principal directions are equal, resulting figure appears too thick)
  • Cabinet (foreshortening factor for edges perpendicular to the plane of projection is one half)
• Perspective drawing


  One of the best types of drawings to provide a pictorial representation of an object
• Types of Perspective Views

  • Bird's eye view
  • Man's eye view
  • Worm's eye view
• Isometric Drawing is a pictorial representation of an object in which all three dimensions are drawn at full scale
• Isometric Drawing is the most commonly used method
• Isometric drawing is built on three lines, isometric axes. one vertically and the other two with the 30° set square either side of it 
• Isometric drawing gives a realistic and balanced impression of the object, without any perspective or distortion 
• Isometric drawing is easy to draw and understand; used in engineering, architecture
• Oblique Drawing is a type of parallel projection, object is shown from a 45° angle to the horizontal plane
• Oblique drawing shows that true shape and size of the front face. it allows to see the depth and orientation of the object
• Oblique drawing is simple and clear; used in technical manuals, diagrams, illustration
• Cavalier - the foreshortening factors for all three principal directions are equal. resulting figure appears too thick
• Cabinet - the foreshortening factor for edges perpendicular to the plane of projection is one half 
• Perspective Drawing is one of the best types of drawings to provide a pictorial representation of an object
• Perspective drawing produces an image of an object in three dimensions that is very similar to what the human eye sees
• Perspective drawing can be one point, two point, or three point perspective
• Perspective drawings most common uses is in architecture, furniture industry