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RE: Test equipment : digital tach

To: "'Shop-Talk'" <>
Subject: RE: Test equipment : digital tach
From: "Randall" <>
Date: Wed, 7 Feb 2007 17:18:30 -0800
> just think about trying 
> to hold that laser at the right spot while tuning.

Hmm, good point.  But it doesn't seem like that would be any harder than
holding a timing light while turning a dizzy.

>  Analog is 
> better when you are looking for a trend rather than an 
> absolute.

True enough, but while I wouldn't claim I have perfect pitch, I can hear
changes in engine note pretty good.  Been tuning them "by ear" for over 30
years ... I mostly want this to double-check the dash tach.

Of course that's a problem too, pretty much impossible to see the dash tach
while watching the laser tach at the same time.

>  I do think 
> it would be handy for checking your furnace fan or grinder 
> wheel though.

Not to mention drill press, lathe & milling machine.

Thanks for the reply,

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