| Discovery Type | Historical Relics |
| Discovery Name | Napier's bones |
| Rank | ★★★★★(5) (Number of Stars on Discovery Name card) |
| explanation | A calculating device invented by John Napier of Scotland in the early 17th century. Also called rhabdology. In addition to the built-in multiplication table that makes multiplication easy, you can also perform calculations such as multiplication and division between multiple digits, and finding square roots. |
| Era | |
| Deck Points | 5 (Required Deck Points for debate deck) |
| Difficulty | (Rank of skills required for discovery) |
| Experience | (For adventure jobs. Excluding company benefits, beginner bonuses, etc.) |
| Remarks | Legacy Wisdom of Numbers/World Calculator Lower left |
| 最終更新 | 2020-06-21 10:16:09 Koumeitan |