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Title: Vacuum-tube voltmeter model 400D serial no.E204 00101 by Hew [Go to resource]
Description: Vacuum-tube voltmeter model 400D serial no.E204 00101 by Hewlett Packard, Bedford, England License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: voltmeter Temporal: 1960-1984 Source: Science Museum Creator: Hewlett Packard (maker) Identifier: 1990-213 Go to resource More Like this...
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