Product Description Feature and specification: .Parallel optics system, 0.8X~5X zoom body, standard outfits.1X plane none aberrance 10X eyepiece, working distance 105mm. .Standard total magnification:8X~50X, the biggest magnification:300X. .With wide field, high eye point and none aberrance 10X eyepieces (Φ22mm) .Binocular eyetubes inclined 45'. .The range of adjusting the diopter is +/-6 .Interpupillary distance adjustment range 50mm~76mm .The range of adjusting the focus is 100mm(round post is 50mm), the diameter of the center working stage is Φ95mm. .The measurement to match between the support and the main body is Φ76mm .The distance between from the post center to the main body center is 140mm .The size of the round post is Φ25mm .There are many magnification objectives, eyepieces, auxiliary illuminators etc.Attachments and kinds of stands and universal stands to be selected.