Japanese Demonstration Rule with Vernier

Object Details

Description

The Japanese Empire Department of Education displayed this oversized wooden ruler at the 1876 World's Fair, the Centennial Exhibition in Philadelphia. The left and right sides are evenly divided into nine units of 2-7/16" or 6.2 cm. These units are subdivided into tenths and numbered on the right by tens from 0 to 90. A sliding piece, or vernier, in the center of the rule has nine units of 0.55 cm on the left side and nine units of 0.65 cm on the right. The vernier is numbered in ascending order on the left and in descending order on the right. An eyehook is attached to the top of the instrument for hanging in a classroom.

A red and white label on the bottom front is marked: No. 46 (/) M. The object arrived with another label marked: Dai NihonTeikoku Monbusho (Japanese Empire Department of Education). Since the intervals on the rule are evenly divided rather than logarithmic, it seems likely that this rule was used for measuring and not for calculating.

After the exhibition, John Eaton, the U.S. Commissioner of Education, arranged for the transfer of Japan's entire exhibit to the Bureau of Education (then part of the Department of the Interior) for a planned museum. The museum closed in 1906 due to high maintenance costs, and much of the collection was transferred to the Smithsonian in 1910.

Other educational mathematical objects exhibited by Japan in 1876 include MA.261301, MA.261302, MA.261305, MA.261306, and MA.261313.

References: Japan. Department of Education, An Outline History of Japanese Education: Prepared for the Philadelphia International Exhibition, 1876 (New York: D. Appleton, 1876), 121–122, 191–202; U.S. Centennial Commission, International Exhibition, 1876. Reports and Awards, ed. Francis A. Walker (Washington, D.C.: Government Printing Office, 1880), viii:143, 335; U.S. Bureau of Education, Annual Report of the Commissioner (1876), ccxi–ccxii.

Location

Currently not on view

Credit Line

Transfer from Bureau of Education, Department of the Interior

before 1876

ID Number

MA.261298

catalog number

261298

accession number

51116

Object Name

scale rule with slide

rule, sliding

Physical Description

wood (overall material)

Measurements

overall: 2 cm x 60.7 cm x 9.3 cm; 25/32 in x 23 29/32 in x 3 21/32 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

Education

Record ID

nmah_1215117

Metadata Usage (text)

CC0

GUID (Link to Original Record)

https://n2t.net/ark:/65665/ng49ca746aa-ad5b-704b-e053-15f76fa0b4fa