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?