This model kit is not to scale. Each building is designed to be 25mm (1 Inch) long. They are designed to be used for a strategic diorama / sand table where scale is not as important as the layout of multiple buildings.
The six buildings in this set include; 2x Concrete Aircraft Hangers (Three hangers per set), 1x Control Tower and Command Building, 1x Barracks complex (four small buildings), 1x Fuel Tank Farm and 1x Large Hanger.