This is the feature that we use the most of all the great features
has. To call the "Crosshair" object, click the middle button of the mouse or press Ctrl+F. This can be very useful when working in the full-screen mode. You can check vertical distances and the amount of bars between two points using the ruler. To do so, select the "Crosshair" object, click with the left mouse button on the first point in the chart and drag the cursor to the second point. 
The first number (23) is the count of bars, the second number (157) is the vertical distance in pips, the third number (1.8705) is the bid price in the second point.