[Therion] Clino question

[Torsten Schnitter]

Hi

I get a strange problem with survey data and clino numbers.
I  can't figure out the error and therefore need any help or advice.

I have to stations with this data:
  survey line_25
    centreline -id "line_25"
      date 2014.09.23
      cs lat-long
      walls on
      units compass degree
      data normal from   to     left right up   down tape compass backcompass clino backclino
                  ....
                  IMO113 IMO114  0.0  0.0   0.0  0.0 58.7 132     309           0.5  -2.0
                  ....
    endcentreline
  endsurvey

The output is shown in attached picture "Clino-Problem.jpg" which is elevation view of course.

The problem is that this survey shot (grey line) is going much to high on the right side. The difference in height from left point to right point should be less than 1m (squares in background of image are 1m).
I checked this with: sin(1.25°) x 58,7m = 1,28m. So the difference in height should be 1,28m.
(The calculated average of clino should be 1,25°, shouldn't it!?)
But the picture shows a difference of close to 5m related to the squares.

To show this strange problem more easy I changed the clino and backclino numbers to 0 and expected a horizontal shot:
  survey line_25
    centreline -id "line_25"
      date 2014.09.23
      cs lat-long
      walls on
      units compass degree
      data normal from   to     left right up   down tape compass backcompass clino backclino
                  ....
                  IMO113 IMO114  0.0  0.0   0.0  0.0 58.7 132     309           0.0  0.0
                  ....
    endcentreline
  endsurvey

The output is shown in attached picture "Clino-Zero.jpg" and as you can see the shot is not horizontal. The difference in height is around 4m. But: sin(0°) x 58,7m = 0m. So the difference in height should be zero.

So what I'm missing or doing wrong?

Thanks for you help,
Torsten
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