A flexible stereo microscope for advanced research work in biomedicine and industrial quality control. The Greenough optical system delivers impressive 3-D images in a zoom of 6.7:1, giving a magnification range of 7.5X-50X in the standard setup. The implemented click-stops allow precise reproduction of magnification. Students and lab technicians benefit from the package solution with integrated transmitted/incident LED illumination, ready to start. Specifications Model SMZ-171-BP SMZ-171-BLED SMZ-171-TP SMZ-171-TLED Observation tube Binocular head Binocular head Trinocular head Trinocular head Optical system Greenough Inclination 45° inclined Trinocular light split - - Fixed 50:50 Fixed 50:50 Interpupillary distance 52-75mm Diopter adjustment On both eyepieces, +/- 5 diopter Eyepieces Widefield N-WF10X/23mm with diopter adjustment Objectives system Zoom, ratio 6.7:1 Objectives 0.75X~5X Working distance 110mm Stand type Pole type stand without illumination Pole type stand with transmitted illumination Pole type stand without illumination Pole type stand with transmitted illumination Head holder For Ø32mm column and Ø76mm head Focus mechanism Coarse focusing system with tension adjustment Focusing stroke 49mm Incident illumination - LED 3W with intensity control - LED 3W with intensity control Transmitted illumination - LED 3W with reflector and intensity control - LED 3W with reflector and intensity control Illumination features - Transmitted light with tilting reflector for oblique illumination - Transmitted light with tilting reflector for oblique illumination Transformer - External - External Power supply - 100-240V (CE) - 100-240V (CE) Accessories included Dust cover, black/white stage plate Dust cover, black/white and frosted stage plates Dust cover, black/white stage plate Dust cover, black/white and frosted stage plates Dimensions LxWxH 303x239x370mm 303x239x405mm 303x239x370mm 303x239x405mm Base 303x239mm Column/Arm Height 290mm, Ø32mm Weight Net 5.45kg 5.95kg 5.7kg 6.2kg Standard contrast technique Brightfield Polarization - Optional add-on - Optional add-on Darkfield - Optional add-on - Optional add-on