What is the meaning of 曲尺?
carpenter's square
(～鄉) Quchi (a township in Wushan, Chongqing, China)
(～村) Quchi (a village in Quchi, Wushan, Chongqing, China)
square (tool), carpenter's square
the Japanese shaku (尺), "metal shaku", or Japanese foot.
Source: wiktionary.org