2 Mar
2018
2 Mar
'18
4:29 p.m.
Quick question concerning the magnetic declination. How you indicate it? Just by entering the date or with the command <declination>? 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. I don’t know if this shift is important for survey accuracy or if I can ignore it ? Thanks and sorry for all my questions. Martin K.