1. Describe the composition and manufacture of a lead pencil.

2. What constitutes a good grade of drawing paper?

3. Explain the composition of an eraser. What qualities must an eraser possess?

4. How is rubber obtained and refined?

5. What is a working drawing?

6. What is the difference between a working drawing and a perspective drawing?

7. What is tracing cloth?

8. What is tracing paper?

9. Describe the composition of India ink. Why is it used for drafting purposes?

10. What is a blue-print? How is it made?