Comments on: Magnetic Deviation: Comprehension, Compensation and Computation (Part II) http://myreckonings.com/wordpress/2009/04/18/magnetic-deviation-comprehension-compensation-and-computation-part-ii/ Lost Art in the Mathematical Sciences Sat, 04 Feb 2012 12:23:15 +0000 http://wordpress.org/?v=2.2.1 By: Walter C. Spraggins http://myreckonings.com/wordpress/2009/04/18/magnetic-deviation-comprehension-compensation-and-computation-part-ii/#comment-1909 Walter C. Spraggins Wed, 29 Dec 2010 15:07:25 +0000 http://myreckonings.com/wordpress/2009/04/18/magnetic-deviation-comprehension-compensation-and-computation-part-ii/#comment-1909 <p>Hello Ron, I need to know the answer to the following: If you are given a survey of land in NW Florida (Freeport) with a 6 deg 10 min. mag dev. off north in 1826 what the bearing would be today (and then) of a due east line. Can you help me?<br /> Thanks and Happy New Year!<br /> Walter</p> <em><p>I've responded privately to Walter with information and values for Freeport, Florida, for today and in 1826. The current value of the magnetic deviation for the contiguous U.S. can be found from the calculator <a href="http://www.ngdc.noaa.gov/geomagmodels/struts/calcDeclination" rel="nofollow">here</a> and the historical value can be found from <a href="http://geomag.usgs.gov/movies/movies/index.php?type=declination&format=flash" rel="nofollow">here</a> and numerically from the U.S. Historic Declination calculator described and linked <a href="http://www.ngdc.noaa.gov/geomag/magfield.shtml" rel="nofollow">here</a>. --- Ron</p></em> Hello Ron, I need to know the answer to the following: If you are given a survey of land in NW Florida (Freeport) with a 6 deg 10 min. mag dev. off north in 1826 what the bearing would be today (and then) of a due east line. Can you help me?
Thanks and Happy New Year!
Walter

I’ve responded privately to Walter with information and values for Freeport, Florida, for today and in 1826. The current value of the magnetic deviation for the contiguous U.S. can be found from the calculator here and the historical value can be found from here and numerically from the U.S. Historic Declination calculator described and linked here. — Ron

]]> By: Nomograms « Harry R. Schwartz http://myreckonings.com/wordpress/2009/04/18/magnetic-deviation-comprehension-compensation-and-computation-part-ii/#comment-1429 Nomograms « Harry R. Schwartz Mon, 11 Jan 2010 03:05:01 +0000 http://myreckonings.com/wordpress/2009/04/18/magnetic-deviation-comprehension-compensation-and-computation-part-ii/#comment-1429 [...] range from the very simple – like the above BMI calculator – to the (often beautifully) complex. Once upon a time they were commonly used for navigation, astronomy, surveying, and countless other [...] […] range from the very simple – like the above BMI calculator – to the (often beautifully) complex. Once upon a time they were commonly used for navigation, astronomy, surveying, and countless other […]

]]> By: Matti Paaso http://myreckonings.com/wordpress/2009/04/18/magnetic-deviation-comprehension-compensation-and-computation-part-ii/#comment-1212 Matti Paaso Tue, 29 Sep 2009 10:29:13 +0000 http://myreckonings.com/wordpress/2009/04/18/magnetic-deviation-comprehension-compensation-and-computation-part-ii/#comment-1212 <p>Hi Ron. I do not yet have magnetic model of that ship - but I will (hope) to generate it. rgd matti</p> <em><p>Matti, I'd certainly be very interested in seeing your model when you get it. Thanks! --- Ron</p></em> Hi Ron. I do not yet have magnetic model of that ship - but I will (hope) to generate it. rgd matti

Matti, I’d certainly be very interested in seeing your model when you get it. Thanks! — Ron

]]> By: Matti Paaso http://myreckonings.com/wordpress/2009/04/18/magnetic-deviation-comprehension-compensation-and-computation-part-ii/#comment-1134 Matti Paaso Sat, 22 Aug 2009 21:36:07 +0000 http://myreckonings.com/wordpress/2009/04/18/magnetic-deviation-comprehension-compensation-and-computation-part-ii/#comment-1134 <p>Thanks.<br /> Is there anyone interested in magnetic modelling and calculations of a small (WWII) tug.</p> <em><p>Hi Matti. Do you have such a magnetic model? If so, I'd be very interested in seeing it! Otherwise, I would not be of any help with modeling such a thing myself, as I'm not familiar with modeling software. I'll email you at your email address about this. Thanks! --- Ron</p></em> Thanks.
Is there anyone interested in magnetic modelling and calculations of a small (WWII) tug.

Hi Matti. Do you have such a magnetic model? If so, I’d be very interested in seeing it! Otherwise, I would not be of any help with modeling such a thing myself, as I’m not familiar with modeling software. I’ll email you at your email address about this. Thanks! — Ron

]]> By: Joe Marasco http://myreckonings.com/wordpress/2009/04/18/magnetic-deviation-comprehension-compensation-and-computation-part-ii/#comment-863 Joe Marasco Sun, 26 Apr 2009 01:17:27 +0000 http://myreckonings.com/wordpress/2009/04/18/magnetic-deviation-comprehension-compensation-and-computation-part-ii/#comment-863 What a wonderful adventure! Thanks so much. Joe What a wonderful adventure! Thanks so much. Joe

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