Japanese Diagonal Rule with Slide

This brass rule has six diagonal scales (each 1-1/4" or 3.1 cm wide) next to each other, an unmarked slide (3.3 cm wide) with beveled edges at the top and bottom, and a stand or endpiece (3.3 cm deep). The Japanese Empire Department of Education displayed this object at the 1876 World's Fair, the Centennial Exhibition in Philadelphia. It was subsequently transferred to the U.S. 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 the object was transferred to the Smithsonian in 1910.
Other educational mathematical objects exhibited by Japan in 1876 include MA*261298, MA*261301, MA*261302, MA*261305, MA*261306, and MA*261313.
Currently not on view
Object Name
scale rule, with slide
rule, sliding
date made
before 1876
Physical Description
brass (overall material)
overall: 3.4 cm x 19 cm x 3.6 cm; 1 11/32 in x 7 15/32 in x 1 13/32 in
place made
ID Number
catalog number
accession number
Scale Rules
Science & Mathematics
Expositions and Fairs
See more items in
Medicine and Science: Mathematics
Scale Rules
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Transfer from Bureau of Education, Department of the Interior

Visitor Comments

Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Enter the characters shown in the image.