RE: [gingery_machines] new article: Making it Dead Flat and Square

Hi Rick
Have you ever watched bricklayers?
All they use is a framing square , a level and a piece of string between two points.
Seems to work good for them.

Keith
Deep Run Portage
Back Shop
" The Lizard Works"

--- On Fri, 12/31/10, Rick Sparber <rgsparber@aol.com> wrote:

From: Rick Sparber <rgsparber@aol.com>
Subject: RE: [gingery_machines] new article: Making it Dead Flat and Square
To: gingery_machines@yahoogroups.com
Date: Friday, December 31, 2010, 4:15 PM

Before I would discount this figure, I would want to know how they did it. If done with something like a narrow slit and the sun shining through it, this might be reasonable.

Rick

-----Original Message-----
From: gingery_machines@yahoogroups.com [mailto:gingery_machines@yahoogroups.com] On Behalf Of R.L. Wurdack
Sent: Friday, December 31, 2010 2:10 PM
To: gingery_machines@yahoogroups.com
Subject: Re: [gingery_machines] new article: Making it Dead Flat and Square

1 part in 8*12*700 = 67200 =~ .000015 is really tough to swallow.

D.

[Non-text portions of this message have been removed]

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