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A measuring instrument for measuring the curvature of a surface
Answer for the clue "A measuring instrument for measuring the curvature of a surface ", 11 letters:
spherometer
Word definitions for spherometer in dictionaries
WordNet
Word definitions in WordNet
n. a measuring instrument for measuring the curvature of a surface
Wiktionary
Word definitions in Wiktionary
n. A device used to measure the curvature of a surface, such as a lens.
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Spherometer \Sphe*rom"e*ter\, n. [Sphere + -meter: cf. F. sph['e]rom[`e]tre.] (Physics) An instrument for measuring the curvature of spherical surface, as of lenses for telescope, etc.
Wikipedia
Word definitions in Wikipedia
A spherometer is an instrument for the precise measurement of the radius of a sphere . Originally, these instruments were primarily used by opticians to measure the curvature of the surface of a lens .