Usage of the character 斤

catty
(PRC) weight equal to 500 g
(Tw) weight equal to 600 g
(HK, Malaysia, Singapore) slightly over 604 g

shìjīn

市斤

[市斤]

Chinese unit of weight equal to 0.5 kg

jīndǒu

斤斗

[斤斗]

variant of 筋斗 (jīndǒu)

jīnliǎng

斤两

[斤兩]

weight
(fig.) importance

Táijīn

台斤

[臺斤]

Taiwan catty (weight equal to 0.6 kg)

gōngjīn

公斤

[公斤]

kilogram (kg)

qiānjīndǐng

千斤顶

[千斤頂]

jack (for lifting weight)

bànjīnbāliǎng

半斤八两

[半斤八兩]

not much to choose between the two
tweedledum and tweedledee

jīnjīnjìjiào

斤斤计较

[斤斤計較]

to haggle over every ounce
(fig.) to fuss over minor matters
to split hairs

zhēngjīnlùnliǎng

争斤论两

[爭斤論兩]

to haggle over every ounce (idiom)
to to fuss over minor points
to be particular about sth

quējīnshǎoliǎng

缺斤少两

[缺斤少兩]

to give short weight

quējīnduǎnliǎng

缺斤短两

[缺斤短兩]

to give short weight

jīnjīnjiàoliàng

斤斤较量

[斤斤較量]

to bicker at length over a trivial matter (idiom)

duǎnjīnquēliǎng

短斤缺两

[短斤缺兩]

to give short weight

chǐtiáoqiānjīndǐng

齿条千斤顶

[齒條千斤頂]

rack and pinion jack

sìliǎngbōqiānjīn

四两拨千斤

[四兩撥千斤]

lit. four ounces can move a thousand catties (idiom)
fig. to achieve much with little effort

yèyāqiānjīndǐng

液压千斤顶

[液壓千斤頂]

hydraulic jack

luóxuánqiānjīndǐng

螺旋千斤顶

[螺旋千斤頂]

screw jack

chèngtuósuīxiǎoyāqiānjīn

秤砣虽小压千斤

[秤砣雖小壓千斤]

although small, a steelyard weight may tip a hundred pounds (idiom)
apparently insignificant details can have a large impact
for want of a nail the battle was lost