Hello!

I am learning how to use a map and compass for navigation, and I have been using Be Expert with Map and Compass. So far everything is straight forward and makes sense in theory and in practice, but then I hit a wall on page 126, second and third paragraph. It is about drawing in magnetic north lines on a map using declination. I’m going to take a picture of the page because it is too much to type on my phone :)

I can’t highlight or underline anything because it is a library book. Can someone explain this section to me if the map I am using has a longitude line of 44°52.5 N’ in the upper margin, and 44°45’ N in the lower margin?

Edit: I think I realized my mistake here. Those lines I mentioned would be my latitude lines, not longitude. My longitude lines read identical at the top and bottom of 86° 0’ W

But even so, if the longitude lines at the top and bottom didn’t line up, say 86° 0’ W and 86° 9’ W, how do I add magnetic north lines using a meridian, and which longitudinal lines are considered meridians?

No comments yet!

Preppers/survival

!preppers@lemmy.ca

Create post

Also about survival, urban survival, grey man, Preparedness, Self-sufficient, Resilient, Adaptable, Low profile

A place to share information on emergency preparedness as it relates to disasters both natural and man-made.

Would you survive in the event of economic, political and social collapse? What natural disasters such as tornadoes, earthquakes or hurricanes are prevalent in your area? What can you do? What should you be doing now? What do you need to know/have?

This is a community for those who think that it’s better to be safe than sorry, and that we need to start preparing now.

Community stats

  • 9

    Monthly active users

  • 15

    Posts

  • 0

    Comments