Japan
units of length for measuring cloth

Shakkan system,

   

hiki

as legally standardized in 1891.

tan

2

     

jo

2.8 - 3

5.6 - 6

   

shaku (kujirajaku)

10

28 - 30

56 - 60

   

sun

10

100

280 - 300

560 - 600

 

bu

10

100

1000

2800 - 3000

5600 - 6000

rin

10

100

1000

10,000

28,000 - 30,000

56,000 - 60,000

0.01491
inches

0.14913
inches

1.49128
inches

14.91287
inches

4.1424
yds

11.598 - 12.4272
yds

23.196 - 24.85
yds

0.378*
mm

0.378*
cm

3.7878*
cm

37.878*
cm

3.78*
m

10.606 - 11.3635
m

21.212 - 22.727
m

 

*The kujirajaku (the draper's shaku) is 1.25 ordinary shaku. The repeating decimal in the metric conversion comes from taking 1 meter = 3.3 ordinary shaku (by the law of 1909), so the kujirajaku = 1/3.3 times 1.25 = 0.378787878.... meters.

Blockhuys states the conversion factors shown are “based upon the computations published by the Japanese authorities, consequent upon the law of March, 1909.” 

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

Page 44.

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