FIELD: devices for physical experiments. SUBSTANCE: device has vessel tray 1, vessel 2, sound source 3, three plates 4, 16, 17, guide 5, scale 6, clamp 8, meter 8, sound receiver 9, amplifier 10, oscillations amplitude recorder 11, bar, cantilever, light-emitting indicator. EFFECT: increased functional capabilities. 2 dwg
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