Record 24/76 |
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Description
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| Small working abacus model designed to show adaptations for blind users. It has a white plastic frame, enclosed back, and six columns of white plastic beads arranged 1 above the bar and 4 below on rods made of piano wire. Beneath the beads is a red felt liner on top of foam rubber backing to keep the beads from moving once set. |
Sixoban prototype
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Copyright Museum of the American Printing House for the Blind
Image Courtesy Museum of the American Printing House for the Blind. Note: use of some materials may be restricted, please call before publishing in any format.
| Sixoban prototype |
Image Courtesy Museum of the American Printing House for the Blind. Note: use of some materials may be restricted, please call before publishing in any format.