spherometer

English

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spherometer

Wikipedia

Etymology

From sphero- +‎ -meter.

Noun

spherometer (plural spherometers)

1. (optics) A device used to measure the curvature of a surface, such as a lens.

   More precisely, a spherometer directly measures a sagitta (distance between a point and a chord), allowing the radius of curvature to be calculated.

Translations

measuring device

Catalan: esferòmetre m Galician: esferómetro m Italian: sferometro m Malay: sferometer Portuguese: esferómetro m (Portugal), esferômetro m (Brazil) Spanish: esferómetro (es) m

• Spherometer in the Encyclopædia Britannica (11th edition, 1911)