... reducing lens for CCD or CMOS camera PC connection Zooming range:0.7x-4.5x, ratio 1:6.5 Products detail ... description digital microscope (JW15N10A) 1.Specification:1)Zooming range of objectives:0.7x-4.5x, ratio 1:6.52 ... 420mm), horizontal bar (Dia. 38mm, length 450mm, not including fine adjustment range 50mm), base plate (255x255x40mm or U type clamp base)5 ...