ittMnJzooM STEREO • Convergent optical system (Greenough design). • Crisp, erect high resoluton images with excellent stereoscopic effect. • Rugged all metal body desinged to last a lifetime. • Zoom range : 0.7X to 4.5X. • Zoom ratio 6.5:1. • Economically positioned bilateral zoom controls. • Binocular eyetubes inclined at 45° for fatigue free viewing. • Total magnification range available with optional auxiliary lenses and • Dual diopter adjustment (±5 diopters) allows the specimen to remain in focus throughout the entire zoom magnification range. • Interpupillary distance adjustment from 54mm...