Cranmer Abacus prototype

Abacus

Accession Number: 1992.369

Description: The frame is made of black polystyrene. Abacus has red felt backing, white plastic beads, and 13 metal rods. Each rod holds 1 bead above the divider bar and four beads below. There are raised unit markers on the divider bar and at the bottom of the frame. "A.P.H." appears at the top of the frame in raised letters.

Height: 3

Width: 5.625

Depth: 0.5

Date Made: ca. 1963

Maker: Cranmer, Terrence V.

Place of Origin: Louisville, KY

Collection: APH Collection

History/Provenance: APH Collection

Subjects: Abacus. Arithmetic. Instructional aids, tools, and supplies. Mathematics. Prototypes.

Dimension Notes: overall

Made: American Printing House for the Blind

Material: Plastic, metal, felt

Exhibit Label: Abacus

Updated: 04/23/2014