Furbish customary units

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Furbish customary units are a system of measurement units used in The Furbish Islands since being adopted in 1815. Furbish units were based off several measurement systems used by countries that colonized the islands, mainly the Fluvan and Mavonan systems. The system is used today along with several local systems and SI units. Since 1923 Furbish units were defined in terms of the SI system.

History

Length

Unit SI (metric) Imperial Definition
Twip 16.5 μm 0.00065 inches 120 of a point
Point 0.33 mm 0.013 inches 16 of a line or ​172 of an inch
Line 1.98 mm 0.78 inches 14 of a barleycorn or ​112 of an inch
Barleycorn 7.92 mm 0.31 inches 13 of an inch
Inch 23.77 mm 0.94 inches 23.77 mm
Thumb 47.54 mm 1.87 inches 2 inches
Palm 95.08 mm 3.74 inches 2 thumbs or 4 inches
Foot 33.28 cm 13.10 inches 7 thumbs or 14 inches
Cubit 47.54 cm 18.70 inches 5 palms or 20 inches
Ell 66.56 cm 26.20 inches 2 feet or 28 inches
Yard 99.83 cm 39.3 inches 3 feet or 42 inches
Pace 1.66 m 65.5 inches 5 feet or 70 inches
Rod 3.99 m 13.10 feet 4 yards or 12 feet
Perch 7.99 m 26.20 feet 2 rods or 24 feet
Arpent 79.87 m 262.03 feet 10 perches or 240 feet
Furlong 239.61 m 786.09 feet 3 arpents or 720 feet
Mile 1677.21 m 1.04 miles 7 furlongs or 5040 feet
Old Einnergans 5031.63 m 3.13 miles 3 miles, approximately one conventional hour's walk
New Einnergans 11740.47 m 7.30 miles 7 miles, approximately one Furbish hour's walk