3rd April 2009, 08:16 AM
The hand-held gps can be a reasonably good tool. We use it under tree cover (in winter) for marking archaeology in woodland; the more expensive equipment usually freaks out under trees, and tape measures is are a knotty nightmare. We tested the accuracy by walking along a number of known points, which we could match up to aerial photos and other mapping. That gave us an approximate accuracy range for the device in those conditions.
I would ideally have ticked more boxes; generally we use whatever is available. This usually involves a gps point (or points) if needed, and then tape measures etc etc. If we can possibly get hold of a total station we'll gladly use that, but that comes down to money/cake diplomacy.
I think i probably adhere to the old fashioned idea that if you know what you're doing with tape measures you can't go that far wrong. Good ol' fashioned techniques worked for the ancient egyptian tomb builders after all.
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Thunder rolled. ... It rolled a six.
I would ideally have ticked more boxes; generally we use whatever is available. This usually involves a gps point (or points) if needed, and then tape measures etc etc. If we can possibly get hold of a total station we'll gladly use that, but that comes down to money/cake diplomacy.
I think i probably adhere to the old fashioned idea that if you know what you're doing with tape measures you can't go that far wrong. Good ol' fashioned techniques worked for the ancient egyptian tomb builders after all.
~~~~~
Thunder rolled. ... It rolled a six.