Across
- 4. gloves
- 6. self-supporting
- 8. the wheel made the cuts
- 11. the man who made this all possible
- 13. this didn't work
- 16. Gutenberg had Leonardo beat
- 18. need it to make sure things don't go backwards
- 20. type of screw used for water
- 22. type of ornithopter that pedals
- 23. makes large magnifying glasses
- 24. like C3PO
- 25. like a battery
Down
- 1. early cannon, like the mortar gun
- 2. tells you how far
- 3. for walking on water
- 5. eventually in cars
- 7. flies across a stage
- 9. written backwards
- 10. leonardo's studies
- 12. to be powered by eight men
- 14. still used in steam engines
- 15. block and tackle
- 17. gives you wings
- 19. revolves or is a twin
- 21. measures air humidity