Leaflet, Magic Reckoner
Leaflet, Magic Reckoner
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- 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.
- Location
- Currently not on view
- Object Name
- Leaflet
- date made
- 1960
- Physical Description
- paper (overall material)
- Measurements
- overall: 7.6 cm x 11.5 cm; 3 in x 4 17/32 in
- ID Number
- 1980.0787.03
- accession number
- 1980.0787
- catalog number
- 1980.0787.03
- Credit Line
- Gift of Mrs. Joan Pearson Watkins
- subject
- Mathematics
- See more items in
- Medicine and Science: Mathematics
- Science & Mathematics
- Mathematical Charts and Tables
- Data Source
- National Museum of American History
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