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Digital Level Final

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naumuk(at)alltel.net
Guest

Posted: Thu Dec 11, 2008 4:15 pm Post subject: Digital Level Final

All-

     I intend to pick up a digital  level at Home Depot or Lowes. Too bad the HF turned out to be a digital compass,  bubble level because the price was right, the tool was wrong, as was the  written description from HF. 

     A couple of  comments:

     1. The Dynon sender and display  have to agree within plus/minus 1 degree, not .01 degree. 

     2. I have a number of tools that  I've spent big money on but only used once or twice. In retrospect, I  think my NicoPress crimper was a good investment vs. a cold  chisel.

     3. For the lister who said that  he now had an outrageous 600 hours in on his project, probably because he used a  digital level since day one and was too fastidious-

     I passed 1000 hrs about the time  my grandson was born, and he's ready to fly. Ever seen a 3 year old in a bomber  jacket?

                                                       do not archive

 Bill Naumuk

Townville, Pa.

HDS 601MG/Corvair  95%

   [quote][b]

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burbby

Joined: 22 Oct 2006
Posts: 34
Location: Millsap, TX

Posted: Thu Dec 11, 2008 7:39 pm Post subject: Digital Level Final

Our Sears Store had on on sale last Sat for 24.99.    Im hoping Santa was watching.

  

 Thanks 

 Gary



--- On Thu, 12/11/08, Bill Naumuk <naumuk(at)alltel.net> wrote:



  	  Quote: 	
		  From: Bill Naumuk <naumuk(at)alltel.net>

Subject: Digital Level Final

To: "zenith list" <zenith-list(at)matronics.com>

Date: Thursday, December 11, 2008, 6:15 PM



    All-

     I intend to pick up a digital level at Home Depot or Lowes. Too bad the HF turned out to be a digital compass, bubble level because the price was right, the tool was wrong, as was the written description from HF. 

     A couple of comments:

     1. The Dynon sender and display have to agree within plus/minus 1 degree, not .01 degree. 

     2. I have a number of tools that I've spent big money on but only used once or twice. In retrospect, I think my NicoPress crimper was a good investment vs. a cold chisel.

     3. For the lister who said that he now had an outrageous 600 hours in on his project, probably because he used a digital level since day one and was too fastidious-

     I passed 1000 hrs about the time my grandson was born, and he's ready to fly. Ever seen a 3 year old in a bomber jacket?

                                                   do not archive

 Bill Naumuk

Townville, Pa.

HDS 601MG/Corvair 95%

 	  Quote: 	
		  



	


	


           [quote][b]

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naumuk(at)alltel.net
Guest

Posted: Fri Dec 12, 2008 3:30 pm Post subject: Digital Level Final

Oh, brother. $39.95 at Home Depot!

                                                    do not archive

 [quote]   ---

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leinad

Joined: 19 Sep 2006
Posts: 283
Location: Central Virginia

Posted: Fri Dec 12, 2008 7:03 pm Post subject: Re: Digital Level Final

Bill,

Something I've never understood was why there's so much interest in tools that are digital.  I have a 25 year old carpenters level 4 foot long.  One can easily see less than a 32nd of inch out level over its length.  This comes to something like 0.04 degrees.  This is amply accurate for building a house or a plane.  Plus the batteries never go dead.

Other digital tools... Someone gave me a digital caliper, I also have an old fashioned rack and pinion dial caliper.  The batteries are dead on (guess which one).

To each his own.

Dan

[quote="naumuk(at)alltel.net"]All-

     I intend to pick up a digital  level at Home Depot or Lowes. Too bad the HF turned out to be a digital compass,  bubble level because the price was right, the tool was wrong, as was the  written description from HF. 

     A couple of  comments:

     1. The Dynon sender and display  have to agree within plus/minus 1 degree, not .01 degree. 

     2. I have a number of tools that  I've spent big money on but only used once or twice. In retrospect, I  think my NicoPress crimper was a good investment vs. a cold  chisel.

     3. For the lister who said that  he now had an outrageous 600 hours in on his project, probably because he used a  digital level since day one and was too fastidious-

     I passed 1000 hrs about the time  my grandson was born, and he's ready to fly. Ever seen a 3 year old in a bomber  jacket?

                                                    ï¿½  do not archive

 Bill Naumuk

Townville, Pa.

HDS 601MG/Corvair  95%

    	  Quote: 	
		  [b]

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_________________
Scratch building XL with Corvair Engine

naumuk(at)alltel.net
Guest

Posted: Fri Dec 12, 2008 7:53 pm Post subject: Digital Level Final

Dan-

    I have 6 bubble levels, from a line level to 4'. I agree a bubble level 

is just as accurate as a digital, but how do you accurately READ a 1 degree 

deviation? I can't, and despite how confident you sound, I bet you can't 

either.

                                                                             

        Bill

                                                 do not archive

---

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leinad

Joined: 19 Sep 2006
Posts: 283
Location: Central Virginia

Posted: Sat Dec 13, 2008 10:17 am Post subject: Re: Digital Level Final

Here's how I measure an angle with a bubble level.  I shim the level on one end until it's level.  I divide the thickness of the shim by the length of the level and take the arc sine.  On your home computer that's inverse sine.   Example: 1/32 shim divided by 48" = 6.67e-4.  Take the inverse sine = .038 degrees

Or I can go the other way.  I can say what shim = 1 degree.  So I take the sine of 1 x length of the level.

Example: (lets use a short level this time)

Sine of 1 = .01745 x 4" long level = .069.

So if I can level my 4" long bubble level with less than a .069 shim I'm under 1 degree out of level.

Anyway I'm using the Dynon too, and I AM confident that the compass is within 1/10th of a degree of level using the above method.

In a way you're right though because my calculator IS digital and I'm using it when I measure angles.

Dan



 	  naumuk(at)alltel.net wrote: 	
		  Dan-

    I have 6 bubble levels, from a line level to 4'. I agree a bubble level 

is just as accurate as a digital, but how do you accurately READ a 1 degree 

deviation? I can't, and despite how confident you sound, I bet you can't 

either.

                                                                             

        Bill

                                                 do not archive

---

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_________________
Scratch building XL with Corvair Engine

naumuk(at)alltel.net
Guest

Posted: Sat Dec 13, 2008 10:53 am Post subject: Digital Level Final

Bottom line is, you trigged it out, rather than had a display.

                                                                             

        Bill

---

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jaybannist(at)cs.com
Guest

Posted: Sat Dec 13, 2008 11:27 am Post subject: Digital Level Final

I have used a 24" aluminum spirit level for years.  There is nothing difficult or highly technical about using it.  You don't need ANYTHING electronic or digital.  You just shim whatever you are trying to level 'til the bubble is centered and swap ends of the level to check for accuracy.  If I were building an astronomical telescope or somesuch, I might use different measuring devices, but not for building a 130mph airplane. If the 24" level is too long for the piece you are trying to level, a small torpedo spirit level will do just fine. 

 

 For setting angles, there are devices on the market (photo) that have a hanging weight physically tied to a dial indicator that shows the angle.  Gravity is not electronic nor digital and is very reliable.  Just make sure and verify the accuracy of the pointer before using it. 

  

  Jay in Dallas

  

     

  

     

  

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