This Content Originally Published by a land surveyor to Land Surveyors United Network
Here are a couple of videos which may help:
and the manual
Do you not have a manual for this TS??? .
First it is in APPs on Program Keys. On Page 92 it shows a example on how to do this.
I do not know if you can download a copy, maybe but you can view it on line. But if you join then maybe.
This is from SlideShare/ Land Surveyor United. This is measuring distances and offset values on a arc curve. Is this what you are doing. Let me know if this helps.
PS. sorry I did not see where Survenator had already show you a manual. Look in it on page 92.
Both AZ1 and AZ2 are forward Azimuths or bearings,your tangent angle is the same as the Radius or Central Angle.it is also the same angle at the PI of the Curve which is not shown.. Which is also a Deflection angle of the 2 tangents,it is also known as the Central or Point of Intersection (PI) angle which is also called the Delta Angle. The program is asking for the curve Data to calculate where the offsets are from the arc line or Center Line of curve..So your angle in question is the same angle at the Radius looking at the Point of Curve then turning to the Point of Tangent.Point of Curve is the beginning and Point of Tangent is the end of the Curve. Have you calculated all the parts of the Curve???.