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Thailand
premetric units of mass

Early European commentators confused the chang with the Chinese catty, which is half its size. Other Thai units confused with the more familiar Chinese trade units were the tamlung, confounded with the tael, and the baht with the tical. Kelly(1835), for example (page 117), describes a pecul of 50 catties, and a catty of 20 tales or 80 ticals.

												p'ahrah
										hap or picul		100
										chang	50
			[Chinese catty] & Thai standard catty							2	100
						tamlung or tael			10	20	1000
						baht or tical		4	40	80	4000
						salung	4	16	160	320	16,000
					fuang	2	8	32	320	640	32,000
				seek	2	4	16	64	640	1280	64,000
			pai	2	4	8	32	128	1280	2560	128,000
	att or klam		2	4	8	16	64	256	2560	5120	256,000
solot or klom		2	4	8	16	32	128	512	5120	10,240	512,000
mid-20ᵗʰ century¹	117 mg	234.3 mg	468.7 mg		1.875 g	3.75 g	15 g	60 g	600 g	1.2 kg	60 kg
late 19th century²	118.1 mg	236.2 mg	472.5 mg		1.890 g	3.78 g	15.12 g	60.48 g	604.8 g	1.2 kg	60.5 kg

Not included in the chart is the hun, = 1/5 of a fuang.

In the export trade (see Nelkenbrecher (1890), page 65), the chang was taken as = 2 Chinese catties, = 2 2/3 pounds avoirdupois = 1.20958 kilograms.

Statistical Office of the United Nations in collaboration with the Food and Agriculture Organization of the United Nations.
World Weights and Measures. Handbook for Statisticians. Provisional Edition.
Statistical Papers: Series M, No. 21.
New York: United Nations, 1955.

Thailand premetric units of mass

Thailand
premetric units of mass