Tachy Shot

Reduce tachy shots for a field station.

This function allows you to calculate new points from the tache shots of a simple tache survey. It is assumed that all distance and bearing reductions have already been performed.

Procedure

The drawing must be in Surveyor Mode. If not, the program displays the following message and exits from the function.

If the drawing is not in Surveyor Mode, you can change the coordinate system in Drawing Settings.

1. You are prompted to:

Indicate tachy setup station

2. Click on the setup station.

3. You are asked:

Click Yes to accept automatic naming of each leg of the traverse viz TR1,TR2; or click No if you want to give each leg of the traverse a different name.

4. If you click Yes, you are prompted to:

5. Input a suitable name and press [Enter].

6. You are prompted to:

7. Accept the start number "1" to be added to the base name, or else enter your own.

8. You are asked if you want the new points to be connected by lines.

Click Yes for lines between the points, or No for just the points.

9. You are asked if you want to add survey dimensions between the setup station and the new points.

Click Yes for survey dimensions between the points, or No for just the points.

10. You are prompted to:

11. Enter the angle of the horizontal leg of the traverse.

12. Enter the bearing of traverse leg.

13. The point is added with the optional line and survey dimensions, as specified.