I did a similar calibration in a small stand of trees one lunchtime near where I work. I think the important thing is to ensure you have the back of the disto held on a fix point, and the laser pointer on a fixed target for each of the 4 readings per barrel roll of the device. Choose trees with a spacing of 4-5m to get the most accurate readings. I followed the instructions and took all 56 readings representing the directions from the centre to the 6 faces and 8 corners of an imagined cube. It is only the directions which are important, so you can move the disto to a different tree to get each set of 4 readings. Assuming your DistoX is not faulty, this should give a good calibration. I got 0.25 on my second attempt. Footleg 2009/5/4 Bruce Mutton <bruce.mutton@paradise.net.nz>
BTW, the best way to callibrate DistoX is to find in a forest THREE trees 2 m each from the other representing "half of cube".
A->B B->A B->C C->B
C->base of B C->2 m height of B B->base of C B->2 m height of C B->base of A B->2 m height of A A->base of B A->2 m height of B up to your upset hand down to your feet
Martin I assume B is the 'right angle' corner of the triangle formed by the trees. In this case, if I understand you correctly, you have described directions that are much more biased to particular orientations than Beats instructions (The diagonal plan and sloping directions are omitted). The instructions do say the particular orientation is not important, but given the troubles I am having I would have thought a uniform three dimensional spread described by cube faces and vertices would be less risky.
On the other I can see it is easy to implement in the field without any special equipment provided one can brace the disto-X against the tree and not bump it when the button is pressed.
I'll give it a go.
Bruce
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