尺规 Traditional form: 尺規 Pinyin (reading): chǐguī Definitions: ruler and compass (in geometric constructions) Characters: 尺 - ruler, tape-measure; unit of length, about 1 ft. 规 - rules, regulations, customs, law Traditional characters: 尺 - ruler, tape-measure; unit of length, about 1 ft. 規 - rules, regulations, customs, law