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Title: [Go to resource]
Description: Wooden instrument containing a hand revolved disc which bears smaller coloured discs, possibly early scotometer or simply for testing colour vision, made by Fannin and Co., 41 Grafton Street, Dublin, Ireland, 1830-1890. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: optical instruments Temporal: 1830-1890 Source: Science Museum Creator: Fannin and Co. (maker) Identifier: A680283 Go to resource More Like this...
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