
thumb|alt=A common spherometer.|A common spherometer. A spherometer is an instrument used for the precise measurement of the radius of curvature of a curved surface. Originally, these instruments were primarily used by opticians to measure the curvature of the surface of a lens.
thumb|alt=A common spherometer.|A common spherometer. A spherometer is an instrument used for the precise measurement of the radius of curvature of a curved surface. Originally, these instruments were primarily used by opticians to measure the curvature of the surface of a lens.
==Design==
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).