Click on the menu Exploring, submenu Measurements for toolbar display
Click on button, then click on consecutively on two atoms. Distance measurement is shown on the model.
Click on button, then click consecutively on thee atoms. Angle
measurement is shown on the model.
Click on button, then click consecutively on four atoms. Dihedral angle measurement is shown on the model.
Click on the button shows/hides atom labels.
Click on the button shows all measurements in a pop-up window.
Button X turns off measurement display and deletes previous measurements.