Yes Yes, Magnetic Variation is a No No, so here’s the Real Angle
Drifting off course just might not be your fault on a long compass leg. This year I happened to notice a few orienteering and rogaining maps with the wrong correction angle applied or specified. There may well be a few more like that.
Intrigued, I did a bit of sleuthing and came up with a convenient culprit Continue reading Magnetic Variation a No No?!*