gjrk wrote:
I wonder if anyone out there can throw any light on this problem:
Very often SMR/inventories grid refs are way out for various reasons . But the GPS can be be at fault often by far greater margins than is suggested in the manual . By the look of your problem I would go for the inventory being out but don't necessarilly believe the gps .
At any of the sites I visit I take a GPS reading - from the centre of the circle, if it's a stone circle, at a rough mid-point of a row, if it's a stone row, and so on. These sites would all be less than ten metres in maximum length, or diameter.
I noticed recently that about half of my readings are out, by maybe ten to forty metres, from the coordinates given in the Archaeological Inventory (of Cork). The remainder agree perfectly.
Is my GPS giving the wrong coordinates, and how would that be possible?
Could the Archaeological Inventory be incorrect?
Thanks,
g.