Face from all angles

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Would you all agree that this is correct?

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I then turn clockwise until I sight to STN1 and read off the angle, in this case I get an angle of 173 18 13 which is my face right angle. In order to take a face right angle I rotate the telescope vertically 180 degrees, making it point in the opposite direction to STN1.

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My instrument is still at STN3 and I am sighting to STN1. The next bit is where I get a little confused. I then turn clockwise until I meet STN1 giving me a face left angle of 353 18 14. I have set up over STN3 and set a fixed bearing of 00 00 00 to STN2. I have done a little sketch which I was hoping someone could confirm that my thinking is correct or if its not then explain why my thinking is incorrect.īelow is a sketch of 3 x points in the ground.

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I am trying to understand face left and face right observations using a total station. Probably worth apologising before hand for what may appear to be extremely simple questions - but I am very new to surveying with little access to field equipment.