Directions for the Use of Hemmi Slide Rules
date: label: date made
content: 1931-1939
name: label: maker
content: SUN HEMMI JAPAN CF
notes: label: Description
content: This stapled ten-page leaflet arrived with 1982.0386.02. It is marked "Printed in Japan" and probably dates to the mid-1930s. It is titled, Short Directions for the Use of the "Hemmi's" Bamboo Slide Rules, and there are indications throughout the text that its author was not a native speaker of English.
label: Description
content: The leaflet explains what a slide rule is. There are sections for Hemmi Normal Slide Rules, the Electro Slide Rule with Log Log Scale, and the Improved Slide Rule. The leaflet also contains an illustration of reading graduations on the scales, an explanation of Hemmi's construction techniques, and various technical problems that could be solved with slide rules. ID number 1982.0386.02 resembles the slide rule illustrated on p. 1, although the drawing shows a ruler in inches on the top edge and depicts PATENT No 58115 as written on the indicator. The example in the collections lacks the ruler and the reference to what is presumably a Japanese patent.
label: Location
content: Currently not on view
place: label: place made
content: Japan: Japan
topic: label: Subject
content: Mathematics
label: Subject
content: Rule, Calculating
label: Subject
content: Education
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
label: See more items in
content: Slide Rules
creditLine: label: Credit Line
content: Gift of John A. Betcher
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1982.0386.03
label: accession number
content: 1982.0386
label: catalog number
content: 1982.0386.03
objectType: label: Object Name
content: pamphlet
physicalDescription: label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: 26.5 cm x 19.4 cm; 10 7/16 in x 7 5/8 in