Stereo Microscope HS-XTD-217,217T,217AT,217BT HS-XTD-217 Series is the zoom stereo microscopes,which can magnify at ... very easy.The zoom objective of the main body is 0.63X-5X,the zoom ratio is 1:8.It can ... be equipped with 0.5X,1.5X,2 X auxiliary objectives and 10X,15X ... 1.5X 2X Photograph attachment and CCD device 0.5X,2.57X,0.75X CCD Camera,colour 1/3High resolution 520TV ...