Medieval Times

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Across
  1. 3. regarded as one of the most significant military inventions of the Medieval period
  2. 6. Earliest known example dating back to 1344 in a cathedral in Padua
  3. 9. came from 15th-century German craftsman Johannes Gutenberg
  4. 10. served as the first reliable means of measuring time
Down
  1. 1. By the 18th century, there were 76 operating in London alone
  2. 2. This was essential for those who seeked a safe navigation system over waters
  3. 4. Initial models required to be held in place by hand
  4. 5. Originated in seventh-century China and offered merchants a significant advantage
  5. 7. An astronomical instrument used to measure the positions of the Sun, planets, and stars
  6. 8. frames that secure a horse rider's feet