CABLE LENGTH In Verne's context, 600 feet
CENTIGRADE 0 degrees centigrade = freezing water
37 degrees centigrade = human body temperature
100 degrees 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 viii