Record 61/76 |
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Description
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| Rectangular black plastic frame with two rectangular cutouts in center; both cutouts lined with red felt; thirteen steel rods run vertically through both cutouts; lower rods each hold four (4) round white plastic moveable beads; upper rods each hold one (1) bead; beads are 7/16" diameter; cast into top frame, "APH"; raised bars and dots on frame divide beads into groups of three. |
Large Abacus
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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.
| Large abacus |
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.