Typically, most zoom stereo microscopes provide 7x-45x magnification. Since the OMV provides 7x-35x, it is significantly more affordable in spite of the minimal reduction in magnification at the upper end of the range. In other words, the OMV represents excellent value with 12V/15W variable halogen lighting, rack and pinion focusing and dual diopters - features typically associated with microscopes of significantly higher price.
The OMV is a fixed arm stereo microscope with rugged construction that has proven particularly popular with Mud Loggers. An added benefit is an included 23mm trinocular adapter with the OMV-T trinocular version.