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Title: Precision sound level meter, 1960-1979. [Go to resource]
Description: Precision sound level meter type 2203 serial no.105252, fitted with one-inch condenser microphone type 4145 serial no.436055, made in Denmark by Bruel & Kjaer, Copenhagen, nominal range 10dB to 130dB on rotary switch and -10db to +10db on meter (glass of meter dial cracked) License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: sound-level meter Temporal: 1960-1979 Source: Science Museum Creator: Brueel & Kjaer Vibro GmbH Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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