Wesco WS-7 Stereo Embryo Scope. Dual diopters with 10x super widefield eyepieces and 20x widefield eyepieces. Interpupillary adjustment. Zoom range of 0.65x - 4.5x. Total magnification with 10x eyepieces, 6.5x-45x; with 20x eyepieces, 13x-90x. Trans-Illuminator stand with mirrored base to prevent excess heating fo stage by light source. 20W halogen illumination.