Sound Meter, Sound Level Meter, Noise Meter, Decibel Meter, Sound Analyzer, Range 30dB to 130dB with Backlight LCD Display, Data Hold, for Home, Office, School Manifold 1/4 "- 5/16" (6

1/4 "- 5/16" (6

-- Rockwell hardness value on a dial

reducing replacement and maintenance cost

[MATERIAL]: Made of high quality tool steel for long life and increased durability

It appears as a clear or colorless liquid with a petroleum-like odor at room temperature

Sound Meter, Sound Level Meter, Noise Meter, Decibel Meter, Sound Analyzer, Range 30dB to 130dB with Backlight LCD Display, Data Hold, for Home, Office, School Manifold 1/4 "- 5/16" (6Measuring Range: 30dB~130dB Resolution: 0. 1dB Accuracy: +1. 5dB Frequency Weighting: A Weighting Maximum display: 1999 Frequency Response: 31. 5Hz~8KHz Response Rate: Fast(0. 125s) Slow(1s) Sampling Rate: 2 times s Microphone: Highly sensitive 1 2 inch condenser microphone Operating Conditions: 1050C, <80%RH, , 2000m Altitude Storage Conditions: 1050C, <70%RH, (remove battery) Display size: 34x31mm (1. 3x 1. 2in) Size: 205x55x30 mm (8. 1 x 2. 2 x 1.