Square measure

This option allows you to measure the distance between two lines along a perpendicular to these two lines.

The option is only available when at least one map is loaded in the application.

This option works by selecting several rows in succession. A dotted segment is formed between the 1st point clicked and the second row selected. This segment is perpendicular to the 1st row. The length of this perpendicular will appear in the middle of the dotted line.