In 1948, the architect Charles-Édouard Jeanneret-Gris, better known as Le Corbusier, released one of his most famous publications titled Modular, followed by Modular 2 (1953). In these texts, Le Corbusier expressed his support of the research that Vitrubio, DaVinci, and Leon Battista Alberti started centuries before: to find the mathematical relationship between human dimensions and nature.
The research of the previously mentioned authors also represents the search to explain the Parthenon, the temples, and cathedrals built according to exact measurements that reference a code of essentiality. Knowing what instruments were used in finding the essence of these buildings was the starting point, instruments that at first glance seemed to bypass time and space. It wouldn't be farfetched to say that the measurements came from essence: parts of the body such as the elbow, the finger, thumb, foot, arm, palm, etc. In fact, there are instruments and measurements that carry names alluding to parts of the human body, an indication of architecture's proximity to it.