Zoom Video Microscope is of the optical system providing high resolution, sharp image and strong  stereoscopic  impression.  0.7X--4.5X  zoom  image  can  observed  by  easily operating. It is a good microscope used in semiconductor and integrated circuit inspection and measurement. It is also used in educational demonstration and agriculture research. 
 
Specifications:  Range of  zoom magnification: 0.7X--4.5X
Zoom ratio: 6.5
Working distance: 90mm
Viewing field of object:  Ø25.7mm -- Ø4mm
Viewing field of image:  Ø18mm ( Depends on the size of the CCD target )
The distance between the top of microscope tube and CCD image sensor: 17.53mm