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Illustrated catalogue of kindergarten material, primary aids, maps, globes, and charts, school furniture and blackboards. (1895)

J.L. Hammett Co. · J.L. Hammett Co, Boston · leaf 73

An illustration from Illustrated catalogue of kindergarten material, primary aids, maps, globes, and charts, school furniture and blackboards., 1895, leaf 73 — es and eighths on one side, aifords a light and accurate measure. Price, each, $0.10 GRADUATED OPEN-FRAME TRIANGLE. The graduated open-frame triangle gives the necessary angles, 90°, 60°, and 30°, on a large scale, together with inches aud subdivisions. This instrument is twenty and three quarters…

Schools -- Furniture, equipment, etc. · Teaching Aids and devices

Internet Archive · Winterthur Museum Library · Public domain (published before 1931). Free to use for anything.

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