The most popular and useful instrument/method in 1512 for surveying and rapid delineation

• A. Theodolite
• B. Plane table and stadia
• C. Sextant
• D. Compass and chain

Answer: (B)

Direct field plotting is the key idea here. A plane table acts as a portable drawing board set up on site, and with an alidade you sight each feature and plot it directly onto the map as you go. This lets you create a usable map in the field itself, doing observation and drawing in one step rather than measuring distances and angles first and then translating them later. The stadia aspect provides quick distance estimates from the instrument to points, so you can plot those points on the map without lengthy setups or calculations. Together, they offer speed and practicality for delineation on location, which is why this combination would be favored for surveying in 1512. The other tools—like a theodolite, which is more specialized and slower to use for rapid field plotting; a compass and chain, which require separate measurement and plotting steps; and a sextant, more suited to navigation—don’t match the on-site efficiency of plane table surveying with stadia.