

Dioptra
From measuring the stars to laying out a road, good tools are always elegant and simple.The dioptra was first used by the Greek astronomers to fix the position of the stars. However, when this was superseded by a more accurate device, the armillary sphere, it found a new function as a surveying tool. It was a portable instrument that could be used to measure distances, angular measurements or work as a level. The dioptra could assess both the horizontal and vertical planes, allowing for readings of the deviation between two set locations, so offering accurate measurement of any angles involved.
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Node Set 建築 Tier 4 |
research_points 1000 |
cost_per_round 0 |
Effects
- -5% 建設費 (全ての領土)
- -10% 州都系列と小さな街系列の建物の建設費 (全ての領土)
- -1 州都系列と小さな街系列の建物の建設に掛かるターン数 (全ての領土)
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