  A common biquadratic potential for the Higgs field $h$ and an additional
scalar field $\phi$, non minimally coupled to gravity, is considered in locally
scale symmetric approaches to standard model fields in curved spacetime. A
common ground state of the two scalar fields exists and couples both fields to
gravity, more precisely to scalar curvature $R$. In Einstein gauge ($\phi =
const$, often called "Einstein frame"), also $R$ is scaled to a constant. This
condition makes perfect sense, even in the general case, in the Weyl geometric
approach. There it has been called {\em Weyl gauge}, because it was first
considered by Weyl in the different context of his original scale geometric
theory of gravity of 1918. Now it seems to get new meaning as a combined effect
of electroweak theory and gravity, and their common influence on atomic
frequencies.
