Stereo Microscope HS-XTD-217,217T,217AT,217BT HS-XTD-217 Series ... .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,20X wide field eyepieces.The trinocular zoom stero microscope can configue ... light:12V/5W Auxiliary Objectives:0.5X 1.5X 2X Photograph attachment and CCD device 0.5X,2.57X,0.75X CCD Camera ...