Re: Re: Re: Re: PHC shanks
Posted by Tom on April 19, 2008 in reply to Re: Re: Re: PHC shanks.:
Mitutoyo; nice. I've got one of those and I get pretty much the same measurement at the small end of PHC (and many other) mouthpieces, plus or minus... Hence, given that it seems reasonable to avoid too much of a 'step' between mouthpiece end and venturi I can't see why one would want a venturi that measured at anything other than 7.5. Consequently, that's the size I make the venturi of my mouthpipes.
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