Record 36/76 |
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Description
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| "The Mitchell Forms consist of a set of geometric figures illustrating outline forms, planes and volumes commonly found in geometric problems. Corresponding figures in all three forms have been built to the same scale (the cube is 3" x 3" x 3"), so that the wire frames will fit over the planes of the same shape as well as over the planes of the solids of the same shape, and the planes themselves are of the same shape and size as the same planes on corresponding solids." -- APH product sheet. The wire outlines are made of 1/8 in. cadmium-plated steel wire; the volumes of brightly painted hardwood; the planes of brightly painted wood compostion. There are two cases, hinged and made of wood. 1992.339.1 - darker blue case; missing yellow hexagon solid, red cube, cicle plane, square plane, hex plane, diamond plane, wire arrow, wire circle, wire hex, and wire diamond; has two red triangle solids, two gold ovoids, three orange cones, two partitioned cones, and two pyramids; 1992.339.2 - light blue case, all parts intact, has two gold oviod solids. |
Mitchell Wire Forms with Matched Planes and Volumes
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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.
| Mitchell Forms |
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.