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Sound-Level Indicator (model SL-120) | musefully
Andreasen, Henning. Sound-Level Indicator (model SL-120), 1978. Plastic casing, 5 3/4 x 1 7/8 x 3/4" (14.6 x 4.8 x 1.9 cm)
. Gift of the designer, 1.1980. (Photo: MoMA)