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Title: "Westminster" type MSP vacuum tube detector (high voltage in [Go to resource]
Description: "Westminster" type MSP vacuum tube detector (high voltage indicator for showing whether a transmission line is live) patent no. 519919 made by The Westminster Eng. Co. Ltd., London, NW10., for use up to 11,000 volts, marked 2405/34, probable date 1934. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: high-voltage indicator Temporal: 1934 Source: Science Museum Creator: Westminster Engineering Co. Ltd. Identifier: 1999-820 Go to resource More Like this...
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