Report - 2.5-10×40 2.5-10×50 3.5-14×40 SF 3.5-14×50 SF 4.5-18×40 SF...4 En 5 En 1. Nomenclature Fig. 1-1 2.5-10×40 2.5-10×50 3.5-14×40 SF 3.5-14×50 SF 1 Objective lens 2 Eyepiece lens

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