The building covers the whole southern part of the square ("Quadrat") A2. The most recent Montessori high school opened in Philadelphia - Quadrat Academy. In typography, a quad (originally "quadrat") was a metal spacer used in letterpress typesetting. The quadrat, or plot as it was often called, was not required. The researcher traveled to each sampling point just as in the quadrat method. A quadrat, rectangular sampling area, was laid out at each sampling point. A suitable size of a quadrat depends on the size of the organisms being sampled. The faces of the heads are almost in quadrat. However, this segmentation only occurs for very short-range dispersal distances and large quadrat sizes. The quadrat is suitable for sampling plants, slow-moving animals, and some aquatic organisms.