卡尺 Traditional form: 卡尺 Pinyin (reading): kǎchǐ Definitions: calipers Characters: 卡 - card, punch card; calorie 尺 - ruler, tape-measure; unit of length, about 1 ft. Traditional characters: 卡 - card, punch card; calorie 尺 - ruler, tape-measure; unit of length, about 1 ft.