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Axis indicator of lensometer

Глосссарий терминов и сокращений по оптическим линзам
    A device in which a scale from 0? to 180? can be aligned to give the axis of cylinder power on a spectacle lens. b “b” box measurement – in lens measurement, the longest vertical distance from the uppermost point to the lowermost point of a shape.




Measurement, английский
  1. Set of operations having the object of determining a value of a quantity (1)

  2. Измерение. система мер.

  3. Измерение; замер

  4. The size, length, etc. of something which has been measured

  5. Измерение

  6. Обмер


Balance lens, английский
    A lens placed in a frame which looks like the lens for the opposite eye to balance cosmetics; similar in thickness and style with no specific rx power.


Axis cylinder, английский
    That principal meridian which contains only the spherical power component of a sphero-cylinder lens. axis will intersect a spherical lens of minus power at its thinnest point and a spherical plus lens at its thickest point. axis optical - (x) – an imaginary line at right angles to the surface of a lens, which passes through the optical center. the meridian of least power 90? away from the meridian of greatest power in a cylindrical lens; used in correcting astigmatism.