Technological Parameter
            1.  Objective  (Quadruple Nosepiece)
            　 Objective N.A. Effective Working Distance Medium
                  4X 0.10 17.912mm Dry
                  10X 0.25 6.544mm Dry
                  20X 0.40 1.05mm Dry
                  40X 0.65 0.736mm Dry
          
            2 . Eyepiece : WF10X (Field diameter: 18mm)
            3.  Total magnification: 40X-