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table of contents
Units of Measure
| Cable length | In Verne’s context, 600 feet | 
| Centigrade | 0° centigrade = freezing water 37° centigrade = human body temperature 100° centigrade = boiling water  | 
| Fathom | 6 feet | 
| Gram | Roughly ¹⁄₂₈ of an ounce | 
| Milligram | Roughly ¹⁄₂₈,₀₀₀ of an ounce | 
| Kilogram (Kilo) | Roughly 2.2 pounds | 
| Hectare | Roughly 2.5 acres | 
| Knot | 1.15 miles per hour | 
| League | In Verne’s context, 2.16 miles | 
| Liter | Roughly 1 quart | 
| Meter | Roughly 1 yard, 3 inches | 
| Millimeter | Roughly ¹⁄₂₅ of an inch | 
| Centimeter | Roughly ²⁄₅ of an inch | 
| Decimeter | Roughly 4 inches | 
| Kilometer | Roughly ⁶⁄₁₀ of a mile | 
| Myriameter | Roughly 6.2 miles | 
| Ton, Metric | Roughly 2,200 pounds |