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WEIGHTS & MEASURES
The metric system was officially introduced by a law passed on 17 December 1923. However, old Thai units are still in common use, especially for measurements of land which is often quoted using the traditional Thai
Thai system = Metric System
1 square wha = 4 square meters
1 ngan (100 square wha) = 400 square meters
1 rai (4 ngan) (1 sq cen) = 1600 square meters
1 baht = 15.16 grams
1 tamlung (4 Baht) = 60 grams
1 chang (20 tamlung) = 1.2 kg
1 haap (50 chang) = 60 kg
1 niu = 2 cm
1 kheup (12 niu) = 25 cm
1 sawk (2 kheup) = 50 cm
1 waa (4 sawk) = 2 meters
1 sen (20 waa) = 40 meters
1 yoht (400 sen) = 16 km
1 kwien = 2,000 liters
1 ban = 1,000 liters (2 ban=1 kwien)
1 sat = 20 liters (50 sat=1 ban)
1 tannan = 1 liter (20 tannan=1 sat)
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