Omega Engineering Decibel Meters Power supplies for stepper drives, sensors, transducers, strain gages, and general purpose use. Linear regulated and switching supplies, adjustable voltages and fixed voltages. Handheld, 30 to 130 dB Digital Sound Meter with Data Logger Low Cost, 30 to 130 dB Sound Level Data Logger Handheld, 37-130 dB, Sound Level Meter
