Digital Sound

LEVEL METER l l l l l l l l MAX / MIN / HOLD, Auto Power Off 35 dB ~ 130dB (31.5Hz ~ 8 Khz) ± 1.5dB (under reference conditions) 0.1 dB 9V Battery (installed) 144gms Including Battery (approx) Carrying Case This Dual-purpose apparatus provides a compact facility for the measurement of the velocity of sound in air, also for the analysis of standing waves. An in built audio signal generator with facility to attach with a speaker and BNC Socket.