Sound Meter 7 Decade Analog Meter

Sound level meters have a variety of uses from measuring environmental or equipment noise levels for safety reasons to setting up and adjusting a home theater system. We use ours mostly for the former.
This sound meter features an analog meter movement rather than a digital readout. This is useful for two reasons. First, it makes it lower cost and second, but not least, allows a more visual feedback of noise peaks and spikes than a digital meter, even ones with an "analog" bar scale. We often get way too distracted by numbers on a digital display and the inevitable large amount of averaging that goes on behind the scenes to keep the display from being a meaningless jumble.
This meter features 7 ranges covering sound levels from 50db to 126db. As a reference, 50 db corresponds to normal background noise in a home or office. 110db roughly corresponds to a chainsaw 1m away and 120db is at the threshold of pain for most people.
Specificatons:

• Seven sound-level ranges:allow measurements from 50---126 DB.
• 60 dB: 50 TO 66 dB
• 70 dB: 60 TO 76 dB
• 80 dB: 70 to 86 dB
• 90 dB: 80 to 96 dB
• 100 dB: 90 to 106 dB
• 110 dB: 100 to 116 dB
• 120 dB: 110 to 126 dB
• A and C weightings:lets you check compliance with safety regulations as well as make acoustic analysis.
• Slow and fast response settings:let you check peak and average noise levels.
• Builtin battery condition indicator.
• Phono-type output jack:for connection to home theater or test equipment.
• Threaded insert:lets you attach the meter to a camera tripod for increased accuracy.
• Accuracy: +/- 2 dB @ 114 dB
• Standard: 0 dB = 0.0002 u bar
• Signal Output: 1.0 volt (peak) minimum into open circuit,with full scale meter deflection at 1 kHz
• Load Impedance: 10 kOhms minimum
• Distortion: Less than 2% at 1 kHz, 0.5-volt
• Microphone: Electric condenser; omnidirectional