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https://indometer.co.id/svantek-sv977d-class-1-sound-and-vibration-level-meter
SVANTEK SV977D Class 1 Sound and Vibration Level Meter
The SVAN 977 can provide broadband results and all the standard weighting filters and also offers a time history logging capability providing broadband results...
sound and vibrationsvantekclasslevelmeter