Decibel Meter - Sound Level dB

Worked great to adjust the announcement p/a amplifier. This way all of our public transportation buses are now at the same volume level. Great to use to adjust buses . considering the circumstances of engine running noise, air conditioning, and passengers to get the perfect sound quality level . Carotenuti 7077

Works fine, this was the only way to read an out of print issue that was sold out in the Decibel store and not available on Ebay.

Pretty good, checked against two semi-pro meters and calibrated SPL against a calibrated measurement mic - tracks well, within a dB or so. All the others I looked at were entirely