Horizontal / Vertical Angle Offset

To determine the horizontal and vertical (3D) coordinates of an inaccessible point using angle measurement to this point and angle and distance measurement to an accessible point.

To enter this offset mode, click in the top left corner of the Topo Survey (Optical) dialog, click Measure to expand the sub-menu and select Horz / Vert Angle Offset.

Horizontal / Vertical Angle Offset mode requires measurement of two locations: HA+VA measurement to the inaccessible point and HA+VA+SD measurement to the prism located at the same horizontal distance from the station as the inaccessible point.

Horizontal coordinates are calculated based on measured values of horizontal angles to the accessible point and inaccessible point and the assumption that the horizontal distance from the total station to the accessible point is equal to the horizontal distance from the total station to the inaccessible point.

Vertical coordinate is calculated based on measured values of vertical angles to the accessible point and inaccessible point.

After taking two measurements, MAGNET Field calculates horizontal and vertical coordinates and stores the inaccessible point to the job. The stored point has the icon in point listings of the current job.