Added some UTM info to the lasers doc, including a recent (2015) fix at laser 0/6

Currently the lasers.htm doc is pretty useless as we have abandoned using Gauss &
Kruger and the fixes meaningless in the current context.
AndyW

handbook/survey/lasers.htm

@@ -17,7 +17,8 @@ analysed the projection in 1822 and Krüger published formulae to
 translate to/from Lat/Long in 1912). In our area, this is UTM zone 31. At
 least, this was our belief, but we don't seem to be getting perfect agreement
 between UTM/31 figures from GPS and the G&K coordinates of fixed
-points... This is probably because the bulk of Austria is in UTM zone 33.
+points... This is probably because the bulk of Austria is in UTM zone 33
+which you will see if you use a GPS, which will give coordinates in zone 33T.
 Hmmmm.</p>
 
 <p>Within this system, there are a number of triangulation points surveyed
@@ -55,6 +56,12 @@ nearest Top Camp), which seems to be out by an angular error of 25 or 26&deg;
 from the Nase point. In the table, point 14/16 is also noted as possibly
 being dodgy, but we have no real indication of why.</p>
 
+<p>Expo (and indeed, the kataster) has now moved over to using the same system as
+the rest of the world, ie. UTM based on the WGS84 datum. So it is unfortunate that
+the points in the table below haven't been translated (and neitehr, it seems have
+the ones in the survex files). Various people at various times have located the points
+with GPS, and those fixes I've found are also included here in UTM zone 33T form.</p>
+
 <table class="trad">
 <tr><td>point</td><td>Y (east)</td><td>X (north)</td><td>Altitude</td><td>where ?</td></tr>
 
@@ -67,6 +74,7 @@ being dodgy, but we have no real indication of why.</p>
 <tr><td>0/5</td><td>36005.96</td><td>(52)82782.82</td><td>1690.70</td><td>up gully and left from <a href="../../1623/107.htm">107</a>
 tatty cloth replaced with alloy tag "LASER 0/5" 1998</td></tr>
 <tr><td>0/6</td><td>35873.09</td><td>(52)82944.29</td><td>1647.78</td><td>Near <a href="../../1623/76/76.htm">76</a> - between the three entrances.  Very faded blue cloth replaced with alloy tag "LASER 0/6" in 2006</td></tr>
+<tr><td>0/6 UTM 33T</td><td>0410719</td><td>52821888</td><td>1652.14</td><td>AERW's Oregon 300, 2015-08-03, GPS a foot above the tag</td></tr>
 
 <tr><td>0/7</td><td>35419.56</td><td>(52)82237.16</td><td>1769.77</td><td>Br&auml;uning Nase</td></tr>
 <tr><td>7/8</td><td>36040.75</td><td>(52)81522.72</td><td>1732.39</td><td>Felskuppe im Bereich des Vd. Schwarzmooskogel (Wei&szlig;e Warze, The Nipple, Bunter's Bulge)</td></tr>