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Kasai Trading "Rusinov" 2.3x40

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Specifications: Objective diameter:  40 mm Magnification:  2.3 x Exit pupil:  ---- IPD:  59 -  74 mm RFOV:  "28  degrees" Focus type:  IF Prism system:  none (Galilean) Waterproof: no Weight (measured, with eyepiece cover…