Accession Number: 1998.19
Description: Red vinylite disc with raised numbers in braille and standard print. Two clear plastic pointers are on one side; one plastic pointer is on the other side. Pointers are kept in place by three screws, two on one side and one on the other. Also included: original "Description and Operating Instructions."
Date Made: ca. 1950
Place of Origin: New York
Credit Line: Gift of Iva Menning in memory of Frank Healy, 1998.19
Subjects: Arithmetic Instructional aids, tools, and supplies Slide rules
Made: American Foundation for the Blind
Material: Plastic
Updated: 02/07/2017
