Explore Scientific is trying to prove that it can make perfect glasses for every pocket - better than others. The LER 52 series are argon-filled, waterproof glasses with a much greater exit pupil than Ploessle, with great layers and very good flatness of the field. • focal length: 4.5 mm • AFOV (own field of view): 52 ° • construction: 6 elements in 3 groups • layers: EMD • exit pupil offset: 15 mm • filter thread: yes, 1.25 "(M28.5 x 0.6) • waterproof, filled with argon • casting standard: 1.25 " • weight: 185 g 10 years



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