Object Details
- Description
- This brass rule with chain was displayed by the Japanese Empire Department of Education at the 1876 Centennial Exhibition in Philadelphia and then was held by the Museum of the U.S. Bureau of Education before transfer to the Smithsonian in 1910. The scale on the rule has six units of 19/32" (1.5 cm). Two of the units are subdivided into 25 parts; the other two are subdivided into ten parts. The chain is approximately 29-1/2" (75 cm) long and is attached to an eye at one end of the rule. Larger links are inserted in the chain at 12" and 24" from the rule. A small octagonal weight (about 1/2" or 1.5 cm long) is attached to the end of the chain.
- The accession record identifies this instrument as a ryosan shaku (depth gauge for cannon barrels). For more information on the exhibition, see MA.261298 and MA.261313.
- Location
- Currently not on view
- Credit Line
- Transfer from Bureau of Education, Department of the Interior
- before 1876
- ID Number
- MA.261289
- accession number
- 51119
- catalog number
- 261289
- Object Name
- scale rule
- rule
- Physical Description
- brass (overall material)
- Measurements
- overall: 1.1 cm x 88.2 cm x 1.1 cm; 7/16 in x 34 23/32 in x 7/16 in
- place made
- Japan
- See more items in
- Medicine and Science: Mathematics
- Science & Mathematics
- Scale Rules
- National Museum of American History
- Subject
- Mathematics
- Expositions and Fairs
- Gauging
- Record ID
- nmah_1215115
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746aa-ad59-704b-e053-15f76fa0b4fa
