A marker lathe is a long, slender, usually rectangular or square- shaped stake made of wood. It’s designed to be easily driven into the ground to mark specific points or lines on a construction site, or in surveying and landscaping tasks. In construction, they are used to outline areas, define boundaries, or indicate where specific elements of a project will be placed. Often, these marker lathes are painted in bright colors (typically orange or fluorescent) to increase visibility on the site.