General Weather/Earth Sciences Topics > Aviation Weather

To go True or Magnetic

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Dr Obbins:
While we all strive for perfection, in reality how much does it really matter? If you are off by 5 what are the consequences?

ValentineWeather:
I would say even getting within 40 degrees with eyeballs is a win. Much harder than you would think. I tweak afterward with software.

CW2274:

--- Quote from: Dr Obbins on November 02, 2015, 09:27:48 PM ---While we all strive for perfection, in reality how much does it really matter? If you are off by 5 what are the consequences?

--- End quote ---
It doesn't. None. Merely a topic of conversation. Akin to having a brand new SHT11 to use or going with a 15. I have a 15.

CW2274:

--- Quote from: Old Tele man on November 02, 2015, 09:32:32 PM ---Quoting the lyrics "...whichever way the wind blows..."

11.1E in 2005 -- at 0.1W per year -- means in 2015 "true" north has drifted to 10.1E magnetic.

--- End quote ---
Ten now, thank you. Even I won't re-calibrate for that. ;)

CW2274:

--- Quote from: ValentineWeather on November 02, 2015, 09:53:48 PM ---I would say even getting within 40 degrees with eyeballs is a win. Much harder than you would think. I tweak afterward with software.

--- End quote ---
40!!! Remind me to NEVER let you operate on me! :lol:

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