Objective:Grouped from any two objectives of 1x, 2x, 3x and 4x Working distance:1x-55mm, 2x-81mm, 3x-61mm, 4x-57mm Wide field plane-scope eyepiece:Wf10x.Wf15x(optional) Total magnification:10x-20x, or 10x-30x, or 10x-40x, or 20x-30x, or 20x-40x, or...
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