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: 40 mm • AFOV (own field of view): 52 ° • construction: 4 elements in 2 groups • layers: EMD • exit pupil offset: 27.1 mm • filter thread: yes, 2 "(M48 x 0.75) • waterproof, filled with argon • cast standard: 2 " • weight: 390 g 10 years



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