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<DIV><FONT face=Arial size=2><SPAN class=921235920-16022011>Is there a way of
turning off the grid alignment rotation for parts of a survey when using the CS
setting? My survey is of a cave (Upper Flood) in the UK using cs OSGB (or
EPSG:27700). Some sections have been copied in from a paper survey that is
already aligned to Grid North, while other sections are new surveys where I have
manually specified declination to Grid North. When turning on the cs
setting, I've noticed that the cave is rotated, because Therion has assumed that
my survey is aligned to magnetic North. </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=921235920-16022011></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=921235920-16022011>I can see two
solutions for the new survey section:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=921235920-16022011>1) change all my
declination settings to be True North rather than Grid North. In this case
Therion will apply the final rotation to Grid North.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=921235920-16022011>2) remove all my
declination settings and allow Therion to determine these based on survey
date. </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=921235920-16022011></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=921235920-16022011>Howevver, I'd prefer
not to have to edit all the source files and it still leaves the problem with
the old paper survey that I traced. Is there something <FONT face=Arial
size=2></FONT>I can do within Therion to turn off the rotation to Grid North
when using the cs setting?</FONT></SPAN></DIV>
<DIV><SPAN class=921235920-16022011><FONT face=Arial
size=2>Regards,</FONT></SPAN></DIV>
<DIV><SPAN class=921235920-16022011><FONT face=Arial size=2>- Ben
Cooper</SPAN></FONT></DIV></BODY></HTML>