0.5X is a condensing glass with a working distance of 165mm.Increase the working distance, reduce the multiple, the multiple after use is *0.5Auxiliar..
0.7X Barlow lens for SM series stereo microscopes, extending working distance and field view of the microscope and cutting magnification power by 0.7 ..
1. Pin design2. Accurate glue, convenient and not blocked3. Environmental protection/Do not hurt your hand4. Bonding/Does not damage the original subs..