Across
- 4. An instrument used for drawing or testing right angles
- 6. the ability to allow some light through a material
Down
- 1. How easy it is the melt a material
- 2. The amount of matter in a material
- 3. The resistance to scratching abrasion indentation
- 5. The ability to stop all light traveling through a material
- 7. A hand tool for cutting wood and other materials