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Title: Tonal Demonstrator, probably English [Go to resource]
Description: Tonal Demonstrator, probably English, c.1900, comprising one wood and five steel sounding rods, plus ivory-headed hammer (steel shaft, black wooden handle), in a fitted and lined case (black). The six rods hang horizontally on a knotted green cord License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1900 Source: Science Museum Identifier: 1991-80 Go to resource More Like this...
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