भूमि की सतह पर स्थित एक ऐसी काल्पनिक रेखा जिसकी क्षैतिज से नियत प्रवणता (constant inclination) होती है, कहलाती है:

In survey work using a total station with reflector measurements, which of the following sequence of temporary adjustments must be performed at a station?

While carrying out a total station survey on one bank of a 250 m wide river, it is necessary to plot electric transmission posts on the opposite bank. No provision exists for crossing the river and the posts are inaccessible. In which mode should the survey work be done?