When a land surveyor locates and establishes points between two survey stations, that act is called ranging. There are two conventional methods of ranging: the direct method and the indirect method.
Direct Ranging Method
This is applicable to situations where the ends of the survey stations are inter-visible. Meaning, you can see point X from point Y and vice versa.
Indirect Ranging Method
This one is for survey stations that aren’t inter-visible. Ranging rods are set up between the two points or s