memory map and magnetic variation

[toilet digger]

just recently got memory map and the GB maps onto my laptop and so far i can't discern if there is any data to prescribe magnetic variation.
would anybody know if there is such an option on memory map or if there is an online doodaa?
i bow to your superior google ninja-ness
ta very much jamie.

 

[QDanT]

from http://northernantiquarian.forumotion.net/t471-pendle-hill-stoney-bank-ringwork-sd-806-428

cheers Danny

 

[toilet digger]

aha , but do you have to enter the variation yourself into the box?
thanks jamie.

 

[toilet digger]

just found this, could work in conjuction
http://www.magnetic-declination.com/

 

[toilet digger]

the previous link only gives declination between true and mag north. this one gives both;
http://www.threelittlemaids.co.uk/magdec/index1.html
in case no one is interested, i'll continue talking to myself.

 

[northumbrian]

two canny usefull sites mr d , cheers.