>
>> You can get a good idea of the vacuum by just grabbing
>> the drive mechanism and seeing you can pull it straight
>> out. The same as reducing the capacitance but without
>> turning the screw. A bad vacuum will be easy to pull--
>> only a couple of pounds of force max. A good cap will
>> require 30 or 40 pounds of force depending on the surface
>> area of the bellows.
>
>It will depend on the cross-section area of the shaft. (Think about it).
>Anyway, 95 percent of atmospheric pressure is hardly a vacuum at all!
>
good point. 95% of atmospheric pressure is bad news.
cheers, Bert,
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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