1. Oblique Pictorials

2. Oblique Pictorials
An Oblique pictorial starts with a straight-on view of one of the object’s faces, which is often the front face.
Angled, parallel lines are drawn to one side to represent the object’s depth. Common oblique angles include 30°, 45°, and 60°.
45°

3. Types of Oblique Drawings
Oblique Pictorials
Types of Oblique Drawings
Introduction to Engineering DesignTM
Unit 1 – Lesson 1.2 – Intro to Technical Sketching
There are two types of oblique pictorials: cavalier and cabinet. The difference between the two is based on how the depth of the object is represented.
This slide is for informational purposes so the student is aware that there are different types.
Oblique Cavalier
Oblique Cabinet
Project Lead The Way, Inc.
Copyright 2007

4. Types of Oblique Drawings
Oblique Pictorials
Introduction to Engineering DesignTM
Unit 1 – Lesson 1.2 – Intro to Technical Sketching
Oblique Cavalier
Oblique Cabinet
The difference in the two is the depth of the object.
Project Lead The Way, Inc.
Copyright 2007

5. General Oblique
Oblique Pictorials
Introduction to Engineering DesignTM
Unit 1 – Lesson 1.2 – Intro to Technical Sketching
A general oblique is a type of oblique pictorial that represents an object’s width and height, but the depth can be any size and drawn at any angle.
The idea is to worry about getting the thought down as a sketch not worrying about the depth or angle.
This is the oblique the students will be drawing. This will allow students to draw the sketch or thought they have and not worry about getting the angle or depth exact.
Project Lead The Way, Inc.
Copyright 2007

6. The Box Method
The box method is a sketching technique that is used to maintain proportionality. It starts with the sketcher envisioning an object contained within an imaginary box.

7. Step #1: Draw the Oblique Box

8. Step #2 Surfaces that Touch the Box

9. Use points and construction lines to identify
Step #3 Draw Rest of Object
Use points and construction lines to identify
edges inside of the box.

11. Step #3 Draw Rest of Object
Trace out the visible edges of the part with thick, solid object lines.

13. Tonal Shading
Oblique Pictorials
Introduction to Engineering DesignTM
Unit 1 – Lesson 1.2 – Intro to Technical Sketching
Add tonal shading to two of the three views by drawing parallel lines spaced closely together.
Increase the contrast by cross-hatching the lines on the darkest face.
Tonal shading is a nice feature to use to enhance your sketch.
Project Lead The Way, Inc.
Copyright 2007