________ में, संदर्भ मध्याह्न रेखा (reference meridian) को पहले लगाया जाता है और माप की दिशा को दिक्मान (bearing) के संख्यात्मक मान के बाद लगाया जाता 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?