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Jim Brierley · 10-08-2020, 11:28 AM

I've always figured compression in psi by a rule of thumb of: advertised ratio x 14.7 + 14.7 = 102.9. (14.7 is sea-level atmospheric pressure) You readings of 102 indicate exactly that.

10-08-2020, 11:28 AM	#7
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,088	Re: Compression Test I've always figured compression in psi by a rule of thumb of: advertised ratio x 14.7 + 14.7 = 102.9. (14.7 is sea-level atmospheric pressure) You readings of 102 indicate exactly that.