Height, weight, wrist size are all unidimensional criteria that are amenable to objective measurement.
Many other human characteristics are multidimensional, but also subject to objective measurement and description. For example, voice can be measured and described, reflecting primary pitch, overtones, volume and other aspects that make a person sound unique.
Gender and sexual identity is both multifaceted and extremely subjective. It has potentially innumerable elements, and every on of those are subject to a wide range of interpretation by the observer, affected by psychological, social, cultural and personal points of view. Even the biological bases of gender are not dichotomous, and morphological structure, hormonal patterns, DNA and numerous other factors resist a scale that can be simply labeled masculine/feminine. The interplay of those variables do not lead to a straightforward continuum.
Because there is no single or simple scale, the class or category of that scale resists naming.