Digital Sound Level Meter, 1 Each

The Digital Sound Level Meter by United Scientific is a handheld meter covering 30 to 130 dBA with ±1.5 dBA accuracy and 0.1 dB resolution. It has an automatic backlight display, max/min hold, low battery indication and auto power off, and ships with a 9 V battery. Physics and environmental science teachers use it for student noise pollution and acoustics investigations.