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Title: Sound and vibration analyser type 1564-A serial no. 629, mad [Go to resource]
Description: Sound and vibration analyser type 1564-A serial no. 629, made by the General Radio Company, Concord, Massachusets, USA, for frequency analysis of voltages having components between 2.5Hz and 25Hz, complete with microphone, power cable, and output jack License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: sound analyser Temporal: 1965-1974 Source: Science Museum Creator: General Radio Company (maker) Identifier: 1989-874 Go to resource More Like this...
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