Mexican units of measurement
A number of units of measurement were used in Mexico to measure length, mass, area, capacity, etc. The Metric system was optional from 1857, and has been compulsory since 1896.^{[1]}^{[2]}
Contents
System before metric system
The Units of the system (from Spanish, Castillian) were legally defined during the transition period of the metric system.^{[1]}
Length
A number of units were used. One vara (lit. "pole") was equal to 0.838m (32.99 inches) as it was legally defined.^{[1]} Some other units and legal equivalents are given below:
1 linea (lit. "line") = 1/432 vara
1 pulgada (lit. "thumbful", "inch") = 1/86 vara
1 pie (lit. "foot") = 1/3 vara
1 milla (lit. "mile") = 5000 pie ^{[3]}
1 legua (lit. "league") = 5000 vara.^{[1]}^{[3]}
Mass
A number of units were used. One libra was equal to 0.460 246 34 kg as it was legally defined.^{[1]} Some other units and legal equivalents are given below:
1 tomin = 1/768 libra
1 adarme = 1/256 libra
1 ochava = 1/128 libra
1 onza = 1/16 libra
1 arroba = 25 libra
1 quintal = 100 libra
1 terco = 160 libra^{[1]}
Area
A number of units were used. One fanega was equal to 35662.8 m^{2} as it was legally defined.^{[1]} Some other units and legal equivalents are given below:
1 caballeria = 12 fanega
1 labor = 18 fanega
1 sitio = 492.28 fanega.^{[1]}^{[3]}
Capacity
Two systems, dry and liquid, were used.
Dry
Several units were used. One cuartillo was equal to 1.891 8 l as it was legally defined.^{[1]}^{[3]} Some other units and legal equivalents are given below:
1 almud = 4 cuartillo
1 fanega = 48 cuartillo
1 carga = 96 cuartillo.^{[1]}^{[3]}
Liquid
Several units were used. Some units and legal equivalents are given below:
1 cuartillo (for wine) = 0.456 264 l
1 cuartillo (for oil) = 0.506 162 l
1 jarra = 18 cuartillos.^{[1]}^{[3]} One frasco was equal to 2 1/2 quarts, and baril was equal to 20 gallons, with local variations.^{[4]}
References
- ^ ^{a} ^{b} ^{c} ^{d} ^{e} ^{f} ^{g} ^{h} ^{i} ^{j} ^{k} Washburn, E.W. (1926). International Critical Tables of Numerical Data, Physics, Chemistry and Technology. 1. New York: McGraw-Hil Book Company, Inc. p. 9. Retrieved 8 February 2015.
- ^ Cardarelli, F. (2003). Encyclopaedia of Scientific Units, Weights and Measures. Their SI Equivalences and Origins. London: Springer. p. 7. ISBN 978-1-4471-1122-1.
- ^ ^{a} ^{b} ^{c} ^{d} ^{e} ^{f} Cardarelli, F. (2003). Encyclopaedia of Scientific Units, Weights and Measures. Their SI Equivalences and Origins. London: Springer. pp. 164–165. ISBN 978-1-4471-1122-1.
- ^ Clarke, F.W. (1891). Weights Measures and Money of All Nations. New York: D. Appleton & Company. p. 51.