प्लेन टेबल सर्वेक्षण (Plane tabling) की किस विधि का उपयोग तब किया जाता है जब बिंदु और उपकरण स्टेशन के बीच की दूरी बहुत अधिक या अगम्य (inaccessible) हो?

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?