Zeiss Aplanatic-Achromatic Double Loupe-36D -9x

Aplanatic-achromatic pocket magnifiers from Carl Zeiss Vision are indispensable aids for many tasks - particularly in industry, research and the skilled trades - where precise vision is of the essence. Their small dimensions also make them useful for persons with severe visual handicaps, e.g. for use when out and about. The aplanatic-achromatic pocket magnifiers are labeled with their refracting power (D), which can be used to calculate the respective magnification based on the conditions of use. These magnifiers provide a distortion-free image without chromatic aberration over the entire field of view. The lenses come standard with an anti-reflection coating. TECHNICAL DATA: Refracting (D) power: 36D (24D plus 12D) Magnification for reference distance of 0.25m (D/4): 9x (6x plus 3x) Optically effective diameter: 22mm Field of view: 32/52/127mm