Granite City ==> audio dosimeter
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This is a DuPont audio dosimeter. It uses to measure several things, such
as the decibel (Db) level of sound, as well as the dose of the sound (I
guess it would be the integral of exp(Db) over time t). It appears to have
several averaging modes. It powers up and does react to different levels
of noise in measuring the decibels. It seems to have a couple of liquid
crystals not working on the screen, but I can still get all readings.
:SATISFACTION:
(Click on the thumbnail images to enlarge)
