Japan
traditional measures of agricultural land

shakkan system,

chō*

as standardized in 1891

段 tan

10
     

畝 se

10

100
   

歩 bu

30

300

3,000
 

go

10

300

3000

30,000

shaku

10

36

1080

10,800

108,000

51.2
sq. in

512.4
sq. in

3.9538
sq. yds.

119
sq. yds.

0.2451
acre

2.4507
acres

330.6
sq. cm

0.33057
sq. m

3.30578
sq. m

99.174
sq. m

991.736
sq. m

9,917.355
sq. m

*The cho that is a unit of area is not the square of the lineal cho.

Urban land is measured only in tsubo; 1 tsubo = 1 bu.

E. J. Blockhuys.
Vade-Mecum of Modern Metrical Units. 17th edition, revised and enlarged.
Tokyo: Dobunkwan, 1924.

Page 45.

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