Leaflet, Magic Reckoner

Description:

One side of this folded paper sheet has a multiplication table for numbers from 1 to 50. The other side has instructions for using the table for both multiplication and division, a list of decimal equivalents of fraction, a table of squares, cubes, square roots and cube roots for numbers from 1 to 100, and a list of useful mathematical facts. One panel of the sheet is marked: MAGIC RECKONER and shows a rectangular base with a round scale and a round disc that rotates within the scale.

The Magic Reckoner was distributed with the Wizard Calculating Machine, an adder. For the adder, see 1980.0787.01.

Date Made: 1960

Location: Currently not on view

Subject: Mathematics

Subject:

See more items in: Medicine and Science: Mathematics, Mathematical Charts and Tables, Science & Mathematics

Exhibition:

Exhibition Location:

Credit Line: Gift of Mrs. Joan Pearson Watkins

Data Source: National Museum of American History

Id Number: 1980.0787.03Accession Number: 1980.0787Catalog Number: 1980.0787.03

Object Name: Leaflet

Physical Description: paper (overall material)Measurements: overall: 7.6 cm x 11.5 cm; 3 in x 4 17/32 in

Guid: http://n2t.net/ark:/65665/ng49ca746b3-6bf4-704b-e053-15f76fa0b4fa

Record Id: nmah_904693

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.