屈度計
Also known as lensometer
thumb|right|A lensmeter in an optical shop [[File:Lensmeter-2.png|thumb|right|upright|A simple lensmeter cross sectional view.
Also known as lensometer
thumb|right|A lensmeter in an optical shop [[File:Lensmeter-2.png|thumb|right|upright|A simple lensmeter cross sectional view.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).