1. Nital - Chapter 2
2. Sextant - Chapter 7
3. Gunpowder - start of Chapter 7
4. Crossbow - Chapter 6
5. Pulley - Chapter 16
6. Makeshift trolley - Chapter 17
7. Smelting furnace - Chapter 21 (unsure)
8. Ramen
9. Magnets
10. Electricity generator
11. Lens - the last four need referencing
The article has already been made, so the project is scratched.