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[svn r5813] Images that were floated left with inline styles now reference main2.css 'onright'/'onleft'.
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@@ -22,18 +22,15 @@ GPS (use waypoint averaging for a couple of hours whilst you explore it).
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There is a separate manual document for <a href="gps.htm">using GPS on
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expo</a>.</p>
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<div style="float: left; margin: 10pt;">
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<a href="../../piclinks/ssvypl.htm">
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<img src="../../tinypix/ssvypl.jpg"
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width="122" height="122" alt="" />
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</a></div>
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<p>The main difference with a surface survey is that you can see, and are not
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<p>
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<a href="../../piclinks/ssvypl.htm"><img src="../../tinypix/ssvypl.jpg"
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width="122" height="122" alt="" class="onleft" /></a>
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The main difference with a surface survey is that you can see, and are not
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constrained by passage walls. The lack of walls may mean that all survey
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points are on the floor, which can be a pain. It is useful to use one or two
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"survey staffs", which may be as simple as a stick shoved in a grike, or a
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photographic tripod which is handy. Make sure not to place a compass too near
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anything made of steel ! An aluminium pole (old tent pole, ski stick or any
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anything made of steel! An aluminium pole (old tent pole, ski stick or any
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odd bit of tube or angle) is light and effective. Making it a useful length
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(eg. 1m or 1.5m) means it can double as a ruler for measuring features.
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Surface survey legs tend to be longer than underground ones, so errors from
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