touchstone in German
touchstone in German
Probierstein
A stone used to verify the quality of gold alloys by rubbing them in order to leave a visible trace.
Prüfstein
A stone used to verify the quality of gold alloys by rubbing them in order to leave a visible trace.
Prüfstein
(figurative, by extension) A standard of comparison or evaluation.
Probierstein
(figurative, by extension) A standard of comparison or evaluation.