OS Maps updated to reflect historic shift in Magnetic North
For the first time in over 220 years Magnetic North lies to the East of Grid North (rather than to the West), and Ordnance Survey has created a new icon to highlight the shift.A spokesperson for Ordnance Survey explained: “The magnetic variation throughout Great Britain has been a few degrees West of grid North with the amount of variation changing every year. For years the number has decreased, and now in the far South West of Britain, the North on your compass lies to the East of the North on your map for the first time since before the Ordnance Survey came into existence in 1791.”
"Many people don't realise when they're new to outdoor walking and navigation is that their compass doesn't point to grid north - except by coincidence in some areas. The compass needle is attracted by magnetic force, which varies in different parts of the world and is constantly changing."
Find out more at www.ordnancesurvey.co.uk
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