油尺 Traditional form: 油尺 Pinyin (reading): yóuchǐ Definitions: dipstick oil measuring rod Characters: 油 - oil, fat, grease, lard; oil paints 尺 - ruler, tape-measure; unit of length, about 1 ft. Traditional characters: 油 - oil, fat, grease, lard; oil paints 尺 - ruler, tape-measure; unit of length, about 1 ft.