#LineOfCollimation #AxisOfTelescope #Axis OfBubbleTube #DatumSurface #DatumLine
Difference Between of collimation and Axis of telescope | Axis of bubble tube | Datum Surface/Line
In this video we will discuss about different important levelling terms such as
Line of collimation
Line of sight
Axis of telescope
Axis of bubble tube
Datum Surface
Datum level
these are very important terms which helps students of diploma and btech civil engineering to understand the concept of Levelling surveying well. this comes under subject surveying chapter Levelling in Civil engineering.
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