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A number of units of measurement were used in Guinea to measure length, mass, etc. Since 1910, the metric system has been compulsory in Guinea.^{[1]}

These units were mainly Portugal, England and local.^{[1]}

Several units were used to measure length. Some of units are provided below:^{[1]}^{[2]}

1 pik = 0.578 m

1 jacktan = 3.658 m.

A number of units were used to measure mass. One benda was equal to 0.0642 kg.^{[1]}^{[2]} One kantar was equal to 0.977 kg.^{[1]}^{[2]} One gammell was 1/5 kantar.^{[1]}^{[2]} Some other units are given below:^{[1]}^{[2]}

1 akey = ^{1}⁄_{48} benda

1 mediatabla = ^{1}⁄_{32} benda

1 aguirage = ^{1}⁄_{16} benda

1 quinto = ^{3}⁄_{32} benda

1 piso = 1 uzan = ^{1}⁄_{8} benda

1 seron = ^{3}⁄_{16} benda

1 eggaba = ^{1}⁄_{3} benda^{[3]}

1 benda (offa) = ^{1}⁄_{2} benda p

One rotl was equal to 0.9538 lb avoirdupois.^{[3]}

- ^
^{a}^{b}^{c}^{d}^{e}^{f}^{g}Washburn, E.W. (1926).*International Critical Tables of Numerical Data, Physics, Chemistry and Technology*. New York: McGraw-Hil Book Company, Inc. p. 8. - ^
^{a}^{b}^{c}^{d}^{e}Cardarelli, F. (2003).*Encyclopaedia of Scientific Units, Weights and Measures. Their SI Equivalences and Origins*. London: Springer. pp. 132, 134. ISBN 978-1-4471-1122-1. - ^
^{a}^{b}Clarke, F.W. (1891).*Weights Measures and Money of All Nations*. New York: D. Appleton & Company. p. 40.