<div dir="auto">Thanks for your reply Ladislav.<div dir="auto"><br></div><div dir="auto">I know that but the automatic declination is calculated for the first januray of the year which is enter, not for the exact date.</div><div dir="auto">It's not a probleme for the accuracy of the survey ? </div><div dir="auto"><br></div><div dir="auto">Martin K. </div></div><div class="gmail_extra"><br><div class="gmail_quote">Le 2 mars 2018 17:05, "Ladislav Blažek" <<a href="mailto:ladislav@lblazek.cz">ladislav@lblazek.cz</a>> a écrit :<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto">Hi,<div><br></div><div>declination should be calculated automatically based on the survey date.</div><div>Declination parameter is for manual correction.<br><br><div id="m_3203758605353509778AppleMailSignature">\LB</div><div><br>2. 3. 2018 v 16:29, Martin KERN via Therion <<a href="mailto:therion@speleo.sk" target="_blank">therion@speleo.sk</a>>:<br><br></div><blockquote type="cite"><div><div id="m_3203758605353509778bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">
<p class="MsoNormal"><span lang="EN-GB">Quick
question concerning the magnetic declination.</span></p><p class="MsoNormal">How you indicate
it?</p>
<p class="MsoNormal"><span lang="EN-GB">Just by entering
the date or with the command <declination>?</span></p>
<p class="MsoNormal"><span lang="EN-GB">Because when
I just specify the date, the declination which is calculate is for the first January,
even if I specify another month in the centreline (e.g. 28.08.2017). Consequently,
centreline is slightly offset that if I enter the real declination for the date.</span></p>
<p class="MsoNormal"><span lang="EN-GB">I don’t
know if this shift is important for survey accuracy or if I can ignore it ?</span></p>
<p class="MsoNormal"><span lang="EN-GB"> </span></p>
<p class="MsoNormal"><span lang="EN-GB">Thanks and
sorry for all my questions.</span></p>
<p class="MsoNormal"><span lang="EN-GB">Martin K.</span></p>
</div><br><div id="m_3203758605353509778bloop_sign_1520004480804385024" class="m_3203758605353509778bloop_sign"></div>
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