reading magnifiers economic, 100x50mm 2,0x Art. Nr. 2642150 Product BenefitsSuitable for tasks which require a low or medium level of magnification.An additional high-magnification lens enables small [...] orientation on the reading material.With eyelet in the end of the handle for round-the-neck cord which is supplied.The biconvex reading magnifiers offer a large visual field in a medium magnification range

and reading magnifiers economic, 80x40mm 2,4x Art. Nr. 2642840 Product BenefitsSuitable for tasks which require a low or medium level of magnification.An additional high-magnification lens enables small [...] orientation on the reading material.With eyelet in the end of the handle for round-the-neck cord which is supplied.The biconvex reading magnifiers offer a large visual field in a medium magnification range

and reading magnifiers economic, Ø120mm 1,9x Art. Nr. 2642120 Product BenefitsSuitable for tasks which require a low or medium level of magnification.An additional high-magnification lens enables small [...] orientation on the reading material.With eyelet in the end of the handle for round-the-neck cord which is supplied.The biconvex reading magnifiers offer a large visual field in a medium magnification range

and reading magnifiers economic, Ø100mm 2,0x Art. Nr. 2642100 Product BenefitsSuitable for tasks which require a low or medium level of magnification.An additional high-magnification lens enables small [...] orientation on the reading material.With eyelet in the end of the handle for round-the-neck cord which is supplied.The biconvex reading magnifiers offer a large visual field in a medium magnification range

and reading magnifiers economic, Ø80mm 2,25x Art. Nr. 264280 Product BenefitsSuitable for tasks which require a low or medium level of magnification.An additional high-magnification lens enables small [...] orientation on the reading material.With eyelet in the end of the handle for round-the-neck cord which is supplied.The biconvex reading magnifiers offer a large visual field in a medium magnification range

and reading magnifiers economic, Ø65mm 3,0x Art. Nr. 264265 Product BenefitsSuitable for tasks which require a low or medium level of magnification.An additional high-magnification lens enables small [...] orientation on the reading material.With eyelet in the end of the handle for round-the-neck cord which is supplied.The biconvex reading magnifiers offer a large visual field in a medium magnification range

one another, whereby the mode of action has an angled progression. Which range of light waves is visible to the eye? The light which is visible to us has a wavelength in the range of 380 nanometres to [...] from a light source oscillate in waves which are scattered in all directions. A polarisation filter in a spectacle lens filters out all oscillating light waves which are not vertical, so that only vertically [...] diffractive aspheric lenses have a special surface structure which diffracts the light, instead of refracting it. The lenses are thinner and lighter, which offers particular advantages in the case of large ma

Hand-held and reading magnifiers economic Product BenefitsSuitable for tasks which require a low or medium level of magnification.An additional high-magnification lens enables small details to be read [...] orientation on the reading material.With eyelet in the end of the handle for round-the-neck cord which is supplied.The biconvex reading magnifiers offer a large visual field in a medium magnification range

Hand-held and reading magnifiers economic Product BenefitsSuitable for tasks which require a low or medium level of magnification.An additional high-magnification lens enables small details to be read [...] orientation on the reading material.With eyelet in the end of the handle for round-the-neck cord which is supplied.The biconvex reading magnifiers offer a large visual field in a medium magnification range

for special vision aids Art. Nr. 1691 Product PropertiesFor storing Galilean and Keplerian systems which have been mounted onto the carrier frameArtificial leather case with zipper fasteningA foam rubber