The story
From a trademark.
Etymology from Wiktionary, CC BY-SA 4.0.
vertometer
Today it means: An ophthalmic bench instrument used to measure dioptric power of a lens. Full definition →
Today it means: An ophthalmic bench instrument used to measure dioptric power of a lens. Full definition →
From a trademark.
Etymology from Wiktionary, CC BY-SA 4.0.