Stereo Microscope HS-XTD-217,217T,217AT,217BT HS-XTD-217 Series is the zoom stereo microscopes,which can magnify at object to ... and 10X,15X,20X wide field eyepieces.The trinocular zoom stero microscope can configue CMOS digital camera eyepiece,photography CCD ... 75mm) Trinocular Head(55mm-75mm) Eyepiece WF10X/23 Objective Zoom range0.63X- 5XZoom ratio18 Working Distance 110mm lllumination Upper ...