Offset (Column) - Titan TTS2 Manual

In the menu of "Offset", select "4. Offset (Plane)" to enter the
interface of "Offset –Pt.1":
Press [Meas] to measure point 1, and press [Enter] to receive the
measured data and enter to the interface of "Offset (plane)-Pt.2".
Refer to the operation of measuring point 1 to get the data of point 2
and point 3 to enter the interface of "Offset (plane-Result)";
Now turn around the alidade to aim at the offset point. Mention
that the offset point must be on the defined plane but not below the
prism bar, otherwise the result will not be correct. The value of
coordinate is being refreshed in process of aiming.
Press [Next P] to enter the offset measurement of next point and
press [Save] to record the result.
Finally, press key 'ESC' to quit the Plane Offset measurement.

8.5 Offset (Column)

Firstly, you should measure the azimuth angle and coordinate of
'P1' on the cylinder under this mode. Then calculate the horizontal
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