I was reading a copy of Fricke and Klein's Theory of Automorphic Forms, and I came across the phrase projective maassbestimmung in the first chapter.
Google translate returns: maßbestimmung as determination of measure.
Maybe this could just be projecive space, but I found projective Raum for that.
Similarly I found hyperbolicshe massbestimmung which could be hyperbolic space or geometry? In that case, I found hyperbolische Geometrie.
Sounds to me as if "Maßbestimmung" is an old word for "Metrik" (metric).
Addendum: A quick Google search shows that at least in this book (on page 380) they used that translation.