Across
- 3. adjustable gap that controls how much light goes through
- 4. a cut piece of glass that separates light
- 5. trading without currency
- 6. a part of a larger whole
- 8. a good of materials in stock
- 10. working parts of a machine
- 13. creates electricity from mechanical energy
- 15. a list of items and descriptions
- 19. selling an established product
- 20. specific tool for something or an activity
Down
- 1. trading/buying in large amounts
- 2. uncompleted work or orders
- 7. combination of two companies
- 9. people or companies that sell products
- 11. complete control over a service
- 12. a machine that separates different materials by spinning it very fast
- 14. an intense beam of light produced by a electronic device
- 16. a measuring tool
- 17. a rise in prices in an economy
- 18. a supporter or customer