Extech 407730 Digital Sound Level Meter.
It measures sound levels from 40 to 130dB with a 2dB accuracy.
It offers both A and C frequency weighting options. 'A' weighting is used for measurements similar to human hearing response, while 'C' weighting is flatter for machine analysis.
The device features a Max Hold function to capture the highest reading.
Potential uses include monitoring workplace machinery, installing audio systems, and product noise reduction