Where do I get coordinates to callibrate my maps?

[Earthworm]

Hiya,

I'm just getting into GPS. I have Mapview GPS on my smartphone (Sony Ericsson p910i). I've scanned in some maps but I need to find some resources on the internet that provide coordinates. I have been on streetmap.co.uk. This is great for callibrating road maps but I want to be able to callibrate some OS maps.

Can anyone suggest some websites that I could use to obtain coordinates for given points on my scanned OS maps???

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