Structure of the subpanel includes following modes:
- Calculation of object length;
- Calculation of a broken line length;
- Calculation of section length;
- Calculation of distance from a point up to object;
- Distance between objects of a vector map;
- Line length for two points;
- Seek point on a contour of object by distance from the beginning;
- Seek point by point, azimuth and distance;
- Seek azimuth by two points;
- Radial scale.