Compass help, what are these numbers?

[Migs]

Those green numbers.
Army bud couldn't even tell me what the numbers meant.

​The number Mason..what do they mean?

[beNder]

Those green numbers.
Army bud couldn't even tell me what the numbers meant.

​The number Mason..what do they mean?

Your bearing.

[Fade]

I -think- those numbers are used to offset your magnetic north from true north in relation to your position.

[Navel Lint]

Magnetic declination?

[LineDoggie]

Green numbers= degress magnetic in 10 degree increments

360 degrees =circle

35=350 deg mag

25= 250 deg mag

[Migs]

360 degrees =circle

35=350 deg mag

25= 250 deg mag

Numbers go up to 39 then start back to 0


Can declination go up that high?

[LineDoggie]

No, it shouldnt have more than 360 degrees or 6400 mils(which this in no way would have an accurate template of).

[Migs]

No, it shouldnt have more than 360 degrees or 6400 mils(which this in no way would have an accurate template of).

Those degrees are marked on the border around the compass (the white numbers)

[LineDoggie]

bigger pic its chinese made

[LineDoggie]

And when dealing with Chinese Manufacturers.....



Sometimes it makes no sense

[Kaplanr]

As long as the virtuous soldier is thermodynamically inhibited, he's fine.

How come we never would have worked with the magnetic declination?

[Mark Sman]

What you have there is a compass that also measures angle in Grads

http://en.wikipedia.org/wiki/Grad_(angle)

Magnetic declination varies depending on where you are. It is printed on most maps/charts with the legend or indicated at the point where true north is shown.

In any case that ring isn't for magnetic declination. The scale is too large . And declination is given in standard 360 degress per circle units on most charts. (Or Radians or Mils. NIST save us.)

Interesting side note. magnetic declination also changes over time as the magnetic pole moves.

This is why runways get renamed/numbered.

http://www.ngdc.noaa.gov/geomag/declination.shtml

http://www.oregonlive.com/argus/inde...means_new.html

[111E]

My guess is that Mark is right and it is in
grad (gon).

[PMI]

While it's probably not the case here 'Qibla' (to find Mecca) compasses are also delineated into 40 sections.