If the photograph is clicked, it grows.

7function Audio-Oscillator AC/DC Voltmeter SINAD Distortion S/N FrequencyMeter SweepGenerator Frequency 20Hz-100KHz,0.6mV-6V,Distortion 0.001-100%　 SINAD 0-99.99dB, ACLevelMeter 0.3000mV-300.0V　 actual distortion 0.0023% at 1KHz Filter 30KHz,80KHz 146(H)425(W)462(D)　100VA　12.3Kg op010(400Hz HighPass filter) op055(“A”weighting filter)