ATP-Dual-Range-Precision-Sound-Level-Meter-SL-805-ATP-SL-805-P-The-ATP-SL-805-is-a-high-precision-instrument-that-measures-noise-level-with-measuring-accuracy-up-to-plusmn-1-5d B-It-is-commonly-used-in-noise-pollution-studies-for-the-quantification-of-almost-any-noise-but-especially-for-industrial-&-environmental-P-P-The-ATP-SL-805-features-a-wide-measuring-range-30-to-130d B-over-two-ranges-It-has-fast-slow-response-&-a-maximum-hold-function-The-ATP-SL-805-meter-can-be-used-for