Han Inventions (Science)

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Across
  1. 1. Earthquake Detector
  2. 5. Tells you where North is
  3. 7. Used for deep drilling
  4. 8. Han Magnet
Down
  1. 2. Lodestone is carved into this item
  2. 3. Made from plants
  3. 4. Powder for Guns
  4. 5. Broom stars
  5. 6. A solar clock