Galaxy CM-170 Check Mate 170 Battery Operated SPL Meter - Black freeship followed by one 9dB step

followed by one 9dB step and finally one 28dB step before “off”

One-hour quick charging and Battery Recovery Management

Optional “indoor” version available with a black enclosure and no grille (model R1-64BNG)

7-volt systems

there's the 500-series thing: small

Galaxy CM-170 Check Mate 170 Battery Operated SPL Meter - Black freeship followed by one 9dB stepThe CM 170 is the latest in the line of Galaxy Audio SPL Meters. The CM 170 is similar to the CM 160 model, except that it has Data Logging with Clock feature, Fast Slow Time Weighting, and Electronic Calibration. The CM 170 comes complete with a carry case, windscreen, USB cable, and software for computer. Today, there is a need to know just how loud your surroundings really are. The CHECK MATES are inexpensive tools everybody should own. Windscreen