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Title: "Keith's Improv'd Scale", electrum triangle to be used with [Go to resource]
Description: "Keith's Improv'd Scale", electrum triangle to be used with a scale rule as a modified form of Marquois scale, engraved "Elliott London" License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: military scales (Marquois)
drawing instrumentsSource: Science Museum Creator: Elliott Brothers Identifier: 1989-851 Go to resource More Like this...
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