In a recent publication Wetzel1 described a new method for evaluating physical fitness which permits the estimate of different aspects of the physical progress of a child from infancy to maturity. The assessment is based on the use of a grid and demands only three simple routine measurements, namely height, weight and age. Wetzel enumerates eight different items which may be determined from the grid: physique (body build), developmental level, nutritional grade, physical status, relative advancement or retardation, maturation, basal heat production and daily caloric intake. The technic is described in detail in the original publication and will not be repeated in this paper. The different aspects are explained by illustrative examples. Yet no examples are given which show the interrelation of the different aspects in the same individual, specifically not in individuals with abnormal bodily dimensions. The present report is intended to illustrate the application of the grid