एक समोच्च रेखा मानचित्र (contour map) में ऐसी समोच्च रेखाएँ दिखाई गई हैं जो सीधी, समानांतर और समान दूरी पर हैं। इन रेखाओं द्वारा निम्नलिखित में से कौन सी विशेषता दर्शाई जाती 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?