Accession Number: 1995.14
Description: White plastic frame; ten (10) rows of rotating wheels, each marked with the braille numerals 0-9, arranged in 5 columns; addition, subtraction, and multiplication signs on wheel to left of each row; row of wheels permanently attached to the Calculaid board; frame at the top of the board designed to hold a Numberaid (an abacus also designed by Schott).
Date Made: ca. 1963
Maker: Schott, Andrew F.
Place of Origin: Louisville, KY
Collection: APH Collection
History/Provenance: APH Collection
Subjects: Instructional aids, tools, and supplies Mathematics
Made: American Printing House for the Blind
Material: Plastic
Updated: 05/30/2018