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Amazon [amazon.com] has REED Instruments R8080 Data Logging Sound Level Meter with Bargraph for $ 218.17. Shipping is free.[LIST][*][*]High accuracy of ±1.4 dB meets Type 2 standards[*]Triple range measurement (60dB dynamic range)[*]A & C frequency weighting[*]Fast & Slow time weighting[*]Record up to 64,000 datapoints and keep track with internal time and date stamp[*]User selectable sampling rate from 1 to 60 seconds