Advanced features| Covers 30 - 130 dB in the A scale and 35 ~~ 130 dB in the C scale with a resolution of 0.1 dB and an accuracy of ±1.5 dB. Meets ANSI S1.4 and IEC 651 Type 2 standards, and includes A & C decibel frequency weighting scales, fast or slow response, AC or DC output, low battery indicator, peak function and can be calibrated in compliance with OSHA using Acoustical Calibrator 850016. Contains many advanced features including: An even larger LCD display with an analog bar graph, auto-ranging, min/max functions and a USB computer interface. Another special function allows you to accurately measure equipment noise in the presence of high background noise. Comes ready to use with a windscreen, 9V battery, instructions, and a hard shell carrying case. N.I.S.T. traceable certificate of calibration available. Dimensions: 11½" × 3" × 1½" (292 × 76 × 38 mm) Weight: 9.9 oz (281 g) .
Sper Scientific 840028 Graphic Display Sound Meter Covers 30 ~ 130 dB in the A scale and 35 ~ 130 dB in the C scale with a resolution of 0.1 dB and an accuracy of ±1.5 dB. Range: 30-130dB
Frequency: 31.5Hz to 8KHz