Survey marker

A survey marker is a little stick or metal object that is put in the ground by people who want to measure the land. Imagine you and your friend looking at a big piece of land and you both want to know exactly how big it is. You take out your survey marker and put it in one spot. Then, you walk a certain distance in a straight line and put another marker there. You keep doing this until you have lots of markers that make a straight line. Now, you know exactly how far apart each marker is and you can measure the whole piece of land. The markers help people know where the land starts and ends so they don't measure the same land twice.