Question

Part of total station used for final centering is?

Answer 1

A total station (TS) or total station theodolite (TST) is an electronic/optical instrument used for surveying and building construction. It is an electronic transit theodolite integrated with electronic distance measurement (EDM) to measure both vertical and horizontal angles and the slope distance from the instrument to a particular point, and an on-board computer to collect data and perform triangulation calculations.[1]

Robotic or motorized total stations allow the operator to control the instrument from a distance via remote control. This eliminates the need for an assistant staff member as the operator holds the retroreflector and controls the total station from the observed point. These motorized total stations can also be used in automated setups knows as Automated Motorized Total Station (AMTS

Answer 2

Part of total station used for final centering is Optical Plummet

Explanation:

• An optical plummet is a device on some theodolites & transits that is used to centre the instrument over the point, instead of a plumb bob that moves in a strong wind
• The optical plummets are fitted with a peephole telescope that looks up and down or just upwards.
• An optical plummet is a part of the geodetic instrument, as well.
• Total Station is an equipment that is used in surveying, for measuring vertical & horizontal  angles, as well as measuring an object's sloping distance to the instrument.