bu [Chinese, Japanese]

1

bù In China, a unit of length, conceptually equal to a pace (two steps).

Changes in value of the bu over time
Period Number
of chi
in a bu
Length
of chi,
cm
Length
of bu,
cm
Before the Qin 8 16 128
Qin after 350 bce–Tang 6 23.1–30.3 138.6–181.8
Song–Qing 5–6 31.6–32 158–192
Qing 5 32 160
Republic 5 33.33 166.7

2

In Japan, 20th century, a unit of length, = 1/100 shaku = 1/10 sun = 3¹⁄33 millimeters (approximately 0.11939 inches). link to a table showing relationships between Japanese units of length Sometimes romanized as boo.  For cloth, 3.787 mm (see shaku).

United Nations, 1966.

3

Synonym, tsubo (坪). In Japan, 20th century, a unit of area, = 36 square shaku = 10 = 2 , approximately 3.3058 square meters (approximately 3.954 square yards). 

United Nations, 1966.

4

In Japan, a unit of shoe size = 1/10 mon, about 2.4 millimeters.

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