Precision integrating sound level meter, 1975-1979.
3 4 c m
40cm
actual image size: 32cm x 26cm

Precision integrating sound level meter, 1975-1979.

© Science Museum / Science & Society Picture Library

Description

Sound level meter, type 2218, fitted with a microphone and preamplifier. Complete with extension cable carrying case. Made by Bruel and Kjaer in Copenhagen, Denmark.
 

Image Ref.

10319558
 

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