How To Take THEODOLITE READING And SIGHTING|Civil Easy Learning

THEODOLITE READING

The Vernier Scale looks like

The readings taken

THEODOLITE SIGHTING

Some Typical Theodolite Diaphragms

  

This is roughly what the diaphragm in our theodolites looks like

THEODOLITE SIGHTING

  Because of the “hole” in the lines of  the diaphragm this is still not good  practice. I am not sure that I am  lined up on the top point . This is much better. I can  repeat this alignment with a  fair degree of certainty 

Sometimes we use the single lines and sometimes it is better to use the double lines