To use in finding safe areas can set the height of the mast to entice the sky properly and know the safest areas around the building to prevent the lightning not to harm life and property.
In order to find the area a safe distance can be determined by the height of the pole lightning. Correctly and know the area a safe distance in the building. To prevent lightning from doing harm to life and property.
Is used to find the area of a safe distance by the height of the เสาล่อฟ้า. Correctly and know the area safe distance in the building. To prevent lightning from danger to life and property.