The Stack Overflow podcast is back! Listen to an interview with our new CEO.

Questions tagged [declination]

magnetic declination is the angle between True North and Magnetic North, measured positive clockwise

Filter by
Sorted by
Tagged with
0
votes
1answer
19 views

sundials various Technicalities

when placing a certain type of sundial one needs to point it at true north as apposed to magnetic or the other one.That being said if the meridian line of true north for the location in question is ...
2
votes
0answers
86 views

NOAA Magnetic Field Component Grid Calculator Help

I am using NOAA's magnetic field component grid calculator trying to calculate the magnetic declination of the entire United States (here's the help page). Essentially, the link asks for a minimum ...
3
votes
2answers
169 views

Does Magnetic Deviation depend on altitude? [closed]

Magnetic declination, sometimes called magnetic variation, is the angle between magnetic north and true north. Declination is positive east of true north and negative when west. Magnetic ...
0
votes
1answer
241 views

Make a Declination Arrow for Data Driven Pages?

I am making a map book over a large area and want to add a correct declination arrow for every page. I have not found a way in ArcGIS to make a declination arrow (in 10.3). I could make my own using ...
2
votes
1answer
521 views

Magnetic declination - which magnetic model to choose?

which model to determine the magnetic declination is more accurate WMM (2014-2019) or IGRF (1590-2019)? I just wanted to determine the magnetic declination for calibration TruPulse Laser Rangefinder. ...
3
votes
1answer
588 views

Declination Diagram

What point on a UTM map does the declination diagram refer to? Is it the centre? Is it the edges? Is there a standard? The central meridian on a UTM map points to true north. Are grid north and true ...
4
votes
1answer
11k views

Applying proper conversion from True to Grid bearing

Assume that Grid North is 1.49 deg W of True North. Also, the magnetic declination is 13.11 deg. If I wanted to take gyroscopic surveys (measured from True North) and then convert them to Grid ...
3
votes
2answers
8k views

How to Calculate North?

I am working for field survey & client requirement is differentiate various north,like magnetic north,true north & grid north.So therefore my question is what is the methodology of calculating ...