Sound level meters

Sound is a sequence of waves of pressure that propagates through compressible media such as air or water. (Sound can propagate through solids as well, but there are additional modes of propagation). Sound that is perceptible by humans has frequencies from about 20 Hz to 20,000 Hz. In air at standard temperature and pressure, the corresponding wavelengths of sound waves range from 17 m to 17 mm. During propagation, waves can be reflected, refracted, or attenuated by the medium.[2]

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94dB and 114dB Sound Calibration at 1KHz Accurate and Simple to use Fits 1", 1/2" or 1/4" diameter microphone

Accuracy class 2 to IEC 60651 Easy to adjust (adjustment screwdriver included) Frequency weighting to characteristic A and C Maximum and minimum memory Measure Hz and dB

Accuracy class 2 to IEC 60651 Easy to adjust (adjustment screwdriver included) Frequency weighting to Characteristic A and C Maximum and minimum value memory Built-in tripod knuckle screw (1/4 inch)

 Max. & Min. function.  Over & Under range indication.  4-digit LCD display with bar graph.  Frequency weighting characteristic for 2 times per second.  AC signal output.  Low battery indication.  IEC 651 Type 2 & ANIS S1.4 Type 2.

• Measurement Range : 30 - 130 dB. • Resolution : 0.1 dB. • Weight : 489 g/1.08 LB. • Dimension : 245 x 68 x 45 mm. • Accessories Included : Instruction manual.......................1 PC