Re: correct air pressure

[Chris Alston <alstonc@odrge.odr.georgetown.edu>]

>X-Sender: rvanausdal@cyberia.com
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>Date:         Sun, 29 Mar 1998 18:16:44 -0500
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>From: rvanausdal <rvanausdal@CYBERIA.COM>
>Subject:      Re: correct air pressure
>To: Multiple recipients of list MEDPHYS <MEDPHYS@LISTS.WAYNE.EDU>
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>The Princo barometer booklet (previously mentioned) discusses a method to
>gain confidence that the barometer actuaaly contains a vacuum.  It
>involvestilting the barometer and listening for a sharp ping as the fluid
>hits the glass. I wouldn't try this withut reading all the instructions.
>
>Ray Van Ausdal
>York Hospital
>
>
>
> At 12:14 PM 3/28/98 -0700, you wrote:
>>
>>         ** Mail from Medphys Listserver **
>>If you reply to this message, it will be posted on Medphys for all the
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>>
>>Note that if you are confident that your mercury barometer has no air in
>>the column, you can calibrate it with a tape measure.  If you're not
>>confident of the vaacuum at the top, it needs repair not calibration.
>>
>>
>>Jerry White
>>gaw@usa.net
>>
>>"Not always right, but never uncertain"
>>
>