- vertex dioptric power
- <opt> ■ Scheitelbrechwert m
English-german technical dictionary. 2013.
English-german technical dictionary. 2013.
Lens clock — A lens clock is a mechanical dial caliper that is used to measure dioptric power of a lens. It is a specialized version of a spherometer. A lens clock measures the curvature of a surface, but gives the result in diopters, assuming the lens is… … Wikipedia
Vertometer — A vertometer is an ophthalmic bench instrument used to measure dioptric power of a lens. It differs from a lensmeter or lensometer which is a general dispensary tool for opticians to verify spectacle prescriptions at the laboratory. A vertometer … Wikipedia