- Collection of
- Edo-Tokyo Museum
- Title
- Curvature Measuring Instrument (Carpenter's Square in the unit Ri)
- Collection ID
- 90363144
- Category
- Lifestyle and Folk Custom
- Creation Date
- 19～20世紀
- Size
- 0.3 cm x 4.7 cm x 9.2 cm
- Edo-Tokyo Museum Digital Archives
- https://www.edohakuarchives.jp/detail-58460.html
