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Title: Universal Ring Dial, 4" diam., with plate to secure greater [Go to resource]
Description: Universal Ring Dial, 4" diam., with plate to secure greater accuracy License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: Universal ring sundial Source: Science Museum Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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