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Title: Hewittic "Service Light" studio stand incorporating two merc [Go to resource]
Description: Hewittic "Service Light" studio stand incorporating two mercury vapour tubes and rectifier (damaged), probably c. 1928 model License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1985-1185 Go to resource More Like this...
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