Explore Distance, Angle, and Dihedral Measurements
To begin a measurement in the NGL Ligand View, use the right-mouse button (or the left-mouse button and the Control key/Control key and mouse click) to select 1, 2, 3 or 4 atoms. Complete the measurement by selecting the final atom twice. Depending on how many atoms are selected, the distance (2 atoms), the angle (3 atoms) or the dihedral angle (4 atoms) is measured and displayed. Deselect all atoms with a right-click in empty space. To remove a measurement, re-select all involved atoms and then the last atom twice in a row.