Compass
A dry-pivoted magnetic needle in a box with a compass card, allowing for reliable determination of direction and revolutionizing maritime navigation.
Core metadata
- ID: compass
- Era: Medieval
- First known date: 1200 (century)
- Region: China and Mediterranean Europe
- Review status: source_checked
- Maturity: N/A
Prerequisites
Dependents
- Dry Compass Navigation (dry_compass_navigation)
- Global Exploration (exploration_global)
- Maritime Pilot Books (maritime_pilot_books)
- Portolan Charts & Maritime Navigation (portolan_charts_maritime_navigation)
- Compass Binnacles (ship_compass_binnacles)
Fields
- None.
Node sources
- Magnetic compass (Encyclopaedia Britannica, 2026, textbook) • Supports: node
- A History of the Ship's Compass (U.S. Naval Institute, 2022, review) • Supports: node
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 3
- Average edge confidence: 68%
- Prerequisite sources: 3
- expert_inference: 3
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Navigation (navigation) | enabling | 68% | expert_inference | Navigation provides a capability that enables this technology without being the only possible path. |
|
| Iron Working (iron_working) | enabling | 68% | expert_inference | Iron Working provides a capability that enables this technology without being the only possible path. |
|
| Mining (mining) | enabling | 68% | expert_inference | Mining provides a capability that enables this technology without being the only possible path. |
|
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