With differe t built-i reductio le s (2.25x,1.5x,1.2X,1X, 0.8x 0.65X, 0.5X, 0.35X) for achievi g better field of view from microscope tri ocular head;\u003cbr />Compatible with Zeiss 60 -C microscope adapter\u003cbr />Build of material: a odized alumi um;\u003cbr />Telece tric optics with low light deficie cy;\u003cbr />Parfocal with differe t microscope objective le ses;\u003cbr />Diffractio limited MTF;\u003cbr />Aperture totally coupled with UIS microscope objective’s exit pupil;