English edit

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A common type of spherometer

Etymology edit

sphero- +‎ -meter.

Noun edit

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 edit