The long range locator frequency (or the frequency antenna metal detector) which has a VDI number in the Edit and Threshold of the Surface and Size has its own precise and scientific working method in coordinate finding and in the correct coordinate finding method the basic principles of the L angle must be followed Determining the primary side should be determined in order to determine the best conditions for determining the position in front of the target. In principle in the primary path where you obtain the L angle you must move accurately in one of the sides in the direction to which the antenna has changed direction

In this situation you can get the boundary point of the outer wall and the LF point and the boundary point of the inner wall from one direction of the side and then specify the side of the walls from the other direction to determine the range opposite the target between the two points of the inner wall boundary