... frequency channel analyzer / analysis meter1. integration, noise statistics, noise acquisition, noise frequency analysis2. built-in 1/1 frequency spectrum filter, ... and frequency spectrum histogramSound calibration TL6020/6020A sound level calibrator Sound level: 94dB, 1kHzDisplay 54mm×42mm LCD digital display, analog watch ... 81mm×31mmWeight 0.4kg , printer: 0.41kg handheld noise spectrum analyzer