[GreenKeys] Re: Bar pressure UOM was: teletype machine noise levels

[Steve Schlink]

At 10:59 AM 9/22/2004 -0700 gil smith  wrote:
>According to the manual, the dB readings are "referenced to 0.00002 
>microbar" (whatever a bar is),

A bar is a low pressure unit of measure in the Metric (Universal) system, 
commonly used to measure atmospheric pressure as would "inches of mercury" 
in the British system. It is roughly equal to 1 atmosphere or 30" hg.

More useless facts ...

Steve