1. Sketching Practice
Gateway To Technology®
Unit 1 – Lesson 1.4 – Sketching and Dimensioning Techniques
Sketching Practice
Put your notebooks and yesterday’s work on the lab table for me to check. Cut out your isometric drawings and tape them into your notebook

2. Pictorial Sketches Show shape of object Show height, width, and depth
Sketching Practice
Gateway To Technology®
Unit 1 – Lesson 1.4 – Sketching and Dimensioning Techniques
Pictorial Sketches
Show shape of object
Show height, width, and depth
Should always be labeled!!
Pictorial drawings show the shape of an object viewed by the human eye. Pictorial sketches are sketches that show height, width, and depth all in one view. Common types of pictorial drawings are isometric and perspective.

3. Object 2 Object 3 Object 1 Sketching Practice Gateway To Technology®
Unit 1 – Lesson 1.4 – Sketching and Dimensioning Techniques
Object 2
Object 3
Object 1
Draw these in the pictorial box, and make isometric sketches of them on the grids. Use the worksheet provided

4. Sketching Practice
Gateway To Technology®
Unit 1 – Lesson 1.4 – Sketching and Dimensioning Techniques
Perspective
Perspective is a way to draw that shows a view of the object in the most realistic way.
Vanishing points are used to guide the lines in the object to the horizon line or the horizontal line you see at your line of sight.

5. 4. One-Point Perspective
Sketching Practice
4. One-Point Perspective
Gateway To Technology®
Unit 1 – Lesson 1.4 – Sketching and Dimensioning Techniques
All lines in the depth project to one point (the vanishing point).
The location of the vanishing point is based on your line of sight.
Copy this one-point perspective sketch into your notebook. Label the front, top, and right side.
Vanishing Point (VP)
This is an example of one point perspective. Notice that all lines in the depth project to one point, the vanishing point. The location of the vanishing point is based on your line of sight.

6. One-Point Perspective
Sketching Practice
One-Point Perspective
Gateway To Technology®
Unit 1 – Lesson 1.4 – Sketching and Dimensioning Techniques
All lines in the depth project to one point (the vanishing point).
The location of the vanishing point is based on your line of sight.
Copy and complete this one-point perspective sketch onto your activity. Label the front, top, and right side.
Vanishing Point (VP) +
This is an example of one point perspective. Notice that all lines in the depth project to one point, the vanishing point. The location of the vanishing point is based on your line of sight.

7. 5. Two-Point Perspective
Sketching Practice
Gateway To Technology®
Unit 1 – Lesson 1.4 – Sketching and Dimensioning Techniques
5. Two-Point Perspective
VP1
VP2
In two-point perspective, the width lines converge on one vanishing point (VP1), and the depth lines converge on the other vanishing point (VP2).
Copy this two-point perspective onto your activity sheet. Label the top, front, and side.