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Title: Wooden model of a Harrison's grid-iron pendulum , sold by Wa [Go to resource]
Description: Wooden model of a Harrison's grid-iron pendulum , sold by Watkins and Hill in 1829 for #1-6/-. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1829 Source: Science Museum Creator: Watkins and Hill (maker) Identifier: 1983-461 Go to resource More Like this...
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